diff --git a/Chinese version of TRON Protocol document.md b/Chinese version of TRON Protocol document.md
index f393447e4..aa2a48854 100644
--- a/Chinese version of TRON Protocol document.md	
+++ b/Chinese version of TRON Protocol document.md	
@@ -27,7 +27,7 @@
         bytes vote_address = 1;
    
         int64 vote_count = 2;
  
        }
  
-       bytes accout_name = 1;
  
+       bytes account_name = 1;
  
        AccountType type = 2;
  
        bytes address = 3;
  
        int64 balance = 4;
  
@@ -253,7 +253,7 @@
     
     message Result {
       enum code {
-        SUCESS = 0;
+        SUCCESS = 0;
         FAILED = 1;
        }
        int64 fee = 1;
@@ -285,7 +285,7 @@
    `TransactionType`包括`UtxoType`和`ContractType`。
 
     message Transaction {
  
-      enum TranscationType {
    
+      enum TransactionType {
    
         UtxoType = 0;
    
         ContractType = 1;
  
        }
  
@@ -304,7 +304,7 @@
           google.protobuf.Any parameter = 2;
 
         }
  
         message raw {
    
-          TranscationType type = 2;
    
+          TransactionType type = 2;
    
           repeated TXInput vin = 5;
    
           repeated TXOutput vout = 7;
    
           int64 expiration = 8;
    
@@ -443,7 +443,7 @@
    `DUPLICATE_PEER`  
    `INCOMPATIBLE_PROTOCOL`  
    `RANDOM_ELIMINATION`  
-   `PEER_QUITING`  
+   `PEER_QUITTING`  
    `UNEXPECTED_IDENTITY`  
    `LOCAL_IDENTITY`  
    `PING_TIMEOU`  
@@ -460,7 +460,7 @@
         DUPLICATE_PEER = 5;
         INCOMPATIBLE_PROTOCOL = 6;
         RANDOM_ELIMINATION = 7;
-        PEER_QUITING = 8;
+        PEER_QUITTING = 8;
         UNEXPECTED_IDENTITY = 9;
         LOCAL_IDENTITY = 10;
         PING_TIMEOUT = 11;
diff --git a/English version of TRON Protocol document.md b/English version of TRON Protocol document.md
index 7d23f5c1f..140ec813f 100644
--- a/English version of TRON Protocol document.md	
+++ b/English version of TRON Protocol document.md	
@@ -27,7 +27,7 @@
         message Vote {
    
            bytes vote_address = 1;
    
            int64 vote_count = 2;
  }
  
-        bytes accout_name = 1;
  
+        bytes account_name = 1;
  
         AccountType type = 2;
  
         bytes address = 3;
  
         int64 balance = 4;
  
@@ -80,7 +80,7 @@
      `parentHash`: the hash of last block – e.g. “_7dacsa…3ed_.”  
      `number`: the height of this block – e.g. _13534657_.  
      `witness_id`: the id of witness which packed this block – e.g. “_0xu82h…7237_”.  
-     `witness_address`: the adresss of the witness packed this block – e.g. “_0xu82h…7237_”.
+     `witness_address`: the address of the witness packed this block – e.g. “_0xu82h…7237_”.
 
          message BlockHeader {
  
            message raw {
    
@@ -127,7 +127,7 @@
            bytes owner_address = 3;

           }
           
-     A `AccountUpdateContract` contains 2 paremeters:  
+     A `AccountUpdateContract` contains 2 parameters:  
      `account_name`: the name for this account – e.g.”_Billsaccount_”.  
      `owner_address`: the address of contract owner – e.g. “_0xu82h…7237_”.
      
@@ -278,7 +278,7 @@ Input, transaction and head block all require signature.
     `TransactionType` have two types: `UtxoType` and `ContractType`.
 
         message Transaction {
  
-          enum TranscationType {
    
+          enum TransactionType {
    
             UtxoType = 0;
    
             ContractType = 1;
  
            }
  
@@ -299,7 +299,7 @@ Input, transaction and head block all require signature.
               google.protobuf.Any parameter = 2;
  
             }
  
             message raw {
    
-              TranscationType type = 2;
    
+              TransactionType type = 2;
    
               repeated TXInput vin = 5;
    
               repeated TXOutput vout = 7;
    
               int64 expiration = 8;
    
@@ -355,7 +355,7 @@ Input, transaction and head block all require signature.
      
         message Result {
           enum code {
-            SUCESS = 0;
+            SUCCESS = 0;
             FAILED = 1;
           }
           int64 fee = 1;
@@ -434,7 +434,7 @@ Input, transaction and head block all require signature.
      `ids`: the identification of block.  
      `type`: what type of the block.
     
-     `ids` contains 2 paremeters:  
+     `ids` contains 2 parameters:  
      `hash`: the hash of block.  
      `number`: the hash and height of block.
       
@@ -457,7 +457,7 @@ Input, transaction and head block all require signature.
      `DUPLICATE_PEER`  
      `INCOMPATIBLE_PROTOCOL`  
      `RANDOM_ELIMINATION`  
-     `PEER_QUITING`  
+     `PEER_QUITTING`  
      `UNEXPECTED_IDENTITY`  
      `LOCAL_IDENTITY`  
      `PING_TIMEOUT`  
@@ -474,7 +474,7 @@ Input, transaction and head block all require signature.
           DUPLICATE_PEER = 5;
           INCOMPATIBLE_PROTOCOL = 6;
           RANDOM_ELIMINATION = 7;
-          PEER_QUITING = 8;
+          PEER_QUITTING = 8;
           UNEXPECTED_IDENTITY = 9;
           LOCAL_IDENTITY = 10;
           PING_TIMEOUT = 11;
@@ -615,7 +615,7 @@ Input, transaction and head block all require signature.
         }
       };
    
-   `AccountList`: the list of acounts in the blockchain explorer.  
+   `AccountList`: the list of accounts in the blockchain explorer.  
    message `AccountList` contains one parameter:  
    `account`:
    
diff --git a/api/api.proto b/api/api.proto
index f8d13a6bb..280266e39 100644
--- a/api/api.proto
+++ b/api/api.proto
@@ -36,7 +36,7 @@ service Wallet {
   rpc CreateTransaction (TransferContract) returns (Transaction) {
   };
   //Use this function instead of CreateTransaction.
-  rpc CreateTransaction2 (TransferContract) returns (TransactionExtention) {
+  rpc CreateTransaction2 (TransferContract) returns (TransactionExtension) {
   };
 
   rpc BroadcastTransaction (Transaction) returns (Return) {
@@ -50,7 +50,7 @@ service Wallet {
   };
 
   //Use this function instead of UpdateAccount.
-  rpc UpdateAccount2 (AccountUpdateContract) returns (TransactionExtention) {
+  rpc UpdateAccount2 (AccountUpdateContract) returns (TransactionExtension) {
   };
 
   //Please use VoteWitnessAccount2 instead of this function.
@@ -58,139 +58,139 @@ service Wallet {
   };
 
   //modify the consume_user_resource_percent
-  rpc UpdateSetting (UpdateSettingContract) returns (TransactionExtention) {
+  rpc UpdateSetting (UpdateSettingContract) returns (TransactionExtension) {
   };
 
   //modify the energy_limit
-  rpc UpdateEnergyLimit (UpdateEnergyLimitContract) returns (TransactionExtention) {
+  rpc UpdateEnergyLimit (UpdateEnergyLimitContract) returns (TransactionExtension) {
   };
 
   //Use this function instead of VoteWitnessAccount.
-  rpc VoteWitnessAccount2 (VoteWitnessContract) returns (TransactionExtention) {
+  rpc VoteWitnessAccount2 (VoteWitnessContract) returns (TransactionExtension) {
   };
   //Please use CreateAssetIssue2 instead of this function.
   rpc CreateAssetIssue (AssetIssueContract) returns (Transaction) {
   };
   //Use this function instead of CreateAssetIssue.
-  rpc CreateAssetIssue2 (AssetIssueContract) returns (TransactionExtention) {
+  rpc CreateAssetIssue2 (AssetIssueContract) returns (TransactionExtension) {
   };
   //Please use UpdateWitness2 instead of this function.
   rpc UpdateWitness (WitnessUpdateContract) returns (Transaction) {
   };
   //Use this function instead of UpdateWitness.
-  rpc UpdateWitness2 (WitnessUpdateContract) returns (TransactionExtention) {
+  rpc UpdateWitness2 (WitnessUpdateContract) returns (TransactionExtension) {
   };
   //Please use CreateAccount2 instead of this function.
   rpc CreateAccount (AccountCreateContract) returns (Transaction) {
   };
   //Use this function instead of CreateAccount.
-  rpc CreateAccount2 (AccountCreateContract) returns (TransactionExtention) {
+  rpc CreateAccount2 (AccountCreateContract) returns (TransactionExtension) {
   }
 
   //Please use CreateWitness2 instead of this function.
   rpc CreateWitness (WitnessCreateContract) returns (Transaction) {
   };
   //Use this function instead of CreateWitness.
-  rpc CreateWitness2 (WitnessCreateContract) returns (TransactionExtention) {
+  rpc CreateWitness2 (WitnessCreateContract) returns (TransactionExtension) {
   }
   //Please use TransferAsset2 instead of this function.
   rpc TransferAsset (TransferAssetContract) returns (Transaction) {
   }
   //Use this function instead of TransferAsset.
-  rpc TransferAsset2 (TransferAssetContract) returns (TransactionExtention) {
+  rpc TransferAsset2 (TransferAssetContract) returns (TransactionExtension) {
   }
   //Please use ParticipateAssetIssue2 instead of this function.
   rpc ParticipateAssetIssue (ParticipateAssetIssueContract) returns (Transaction) {
   }
   //Use this function instead of ParticipateAssetIssue.
-  rpc ParticipateAssetIssue2 (ParticipateAssetIssueContract) returns (TransactionExtention) {
+  rpc ParticipateAssetIssue2 (ParticipateAssetIssueContract) returns (TransactionExtension) {
   }
   //Please use FreezeBalance2 instead of this function.
   rpc FreezeBalance (FreezeBalanceContract) returns (Transaction) {
   }
   //Use this function instead of FreezeBalance.
-  rpc FreezeBalance2 (FreezeBalanceContract) returns (TransactionExtention) {
+  rpc FreezeBalance2 (FreezeBalanceContract) returns (TransactionExtension) {
   }
   //Use this function when FreezeBalanceV2.
-  rpc FreezeBalanceV2 (FreezeBalanceV2Contract) returns (TransactionExtention) {
+  rpc FreezeBalanceV2 (FreezeBalanceV2Contract) returns (TransactionExtension) {
   }
 
   //Please use UnfreezeBalance2 instead of this function.
   rpc UnfreezeBalance (UnfreezeBalanceContract) returns (Transaction) {
   }
   //Use this function instead of UnfreezeBalance.
-  rpc UnfreezeBalance2 (UnfreezeBalanceContract) returns (TransactionExtention) {
+  rpc UnfreezeBalance2 (UnfreezeBalanceContract) returns (TransactionExtension) {
   }
   //Use this function when UnfreezeBalanceV2.
-  rpc UnfreezeBalanceV2 (UnfreezeBalanceV2Contract) returns (TransactionExtention) {
+  rpc UnfreezeBalanceV2 (UnfreezeBalanceV2Contract) returns (TransactionExtension) {
   }
 
   //Please use UnfreezeAsset2 instead of this function.
   rpc UnfreezeAsset (UnfreezeAssetContract) returns (Transaction) {
   }
   //Use this function instead of UnfreezeAsset.
-  rpc UnfreezeAsset2 (UnfreezeAssetContract) returns (TransactionExtention) {
+  rpc UnfreezeAsset2 (UnfreezeAssetContract) returns (TransactionExtension) {
   }
   //Please use WithdrawBalance2 instead of this function.
   rpc WithdrawBalance (WithdrawBalanceContract) returns (Transaction) {
   }
   //Use this function instead of WithdrawBalance.
-  rpc WithdrawBalance2 (WithdrawBalanceContract) returns (TransactionExtention) {
+  rpc WithdrawBalance2 (WithdrawBalanceContract) returns (TransactionExtension) {
   }
 
-  rpc WithdrawExpireUnfreeze (WithdrawExpireUnfreezeContract) returns (TransactionExtention) {
+  rpc WithdrawExpireUnfreeze (WithdrawExpireUnfreezeContract) returns (TransactionExtension) {
   }
 
-  rpc DelegateResource (DelegateResourceContract) returns (TransactionExtention) {
+  rpc DelegateResource (DelegateResourceContract) returns (TransactionExtension) {
   }
 
-  rpc UnDelegateResource (UnDelegateResourceContract) returns (TransactionExtention) {
+  rpc UnDelegateResource (UnDelegateResourceContract) returns (TransactionExtension) {
   }
 
-  rpc CancelAllUnfreezeV2 (CancelAllUnfreezeV2Contract) returns (TransactionExtention) {
+  rpc CancelAllUnfreezeV2 (CancelAllUnfreezeV2Contract) returns (TransactionExtension) {
   }
 
   //Please use UpdateAsset2 instead of this function.
   rpc UpdateAsset (UpdateAssetContract) returns (Transaction) {
   }
   //Use this function instead of UpdateAsset.
-  rpc UpdateAsset2 (UpdateAssetContract) returns (TransactionExtention) {
+  rpc UpdateAsset2 (UpdateAssetContract) returns (TransactionExtension) {
   }
 
-  rpc ProposalCreate (ProposalCreateContract) returns (TransactionExtention) {
+  rpc ProposalCreate (ProposalCreateContract) returns (TransactionExtension) {
   }
 
-  rpc ProposalApprove (ProposalApproveContract) returns (TransactionExtention) {
+  rpc ProposalApprove (ProposalApproveContract) returns (TransactionExtension) {
   }
 
-  rpc ProposalDelete (ProposalDeleteContract) returns (TransactionExtention) {
+  rpc ProposalDelete (ProposalDeleteContract) returns (TransactionExtension) {
   }
 
-  rpc BuyStorage (BuyStorageContract) returns (TransactionExtention) {
+  rpc BuyStorage (BuyStorageContract) returns (TransactionExtension) {
   }
 
-  rpc BuyStorageBytes (BuyStorageBytesContract) returns (TransactionExtention) {
+  rpc BuyStorageBytes (BuyStorageBytesContract) returns (TransactionExtension) {
   }
 
-  rpc SellStorage (SellStorageContract) returns (TransactionExtention) {
+  rpc SellStorage (SellStorageContract) returns (TransactionExtension) {
   }
 
-  rpc ExchangeCreate (ExchangeCreateContract) returns (TransactionExtention) {
+  rpc ExchangeCreate (ExchangeCreateContract) returns (TransactionExtension) {
   }
 
-  rpc ExchangeInject (ExchangeInjectContract) returns (TransactionExtention) {
+  rpc ExchangeInject (ExchangeInjectContract) returns (TransactionExtension) {
   }
 
-  rpc ExchangeWithdraw (ExchangeWithdrawContract) returns (TransactionExtention) {
+  rpc ExchangeWithdraw (ExchangeWithdrawContract) returns (TransactionExtension) {
   }
 
-  rpc ExchangeTransaction (ExchangeTransactionContract) returns (TransactionExtention) {
+  rpc ExchangeTransaction (ExchangeTransactionContract) returns (TransactionExtension) {
   }
 
-  rpc MarketSellAsset (MarketSellAssetContract) returns (TransactionExtention) {
+  rpc MarketSellAsset (MarketSellAssetContract) returns (TransactionExtension) {
   }
 
-  rpc MarketCancelOrder (MarketCancelOrderContract) returns (TransactionExtention) {
+  rpc MarketCancelOrder (MarketCancelOrderContract) returns (TransactionExtension) {
   }
 
   rpc GetMarketOrderById (BytesMessage) returns (MarketOrder) {
@@ -228,13 +228,13 @@ service Wallet {
   rpc GetNowBlock (EmptyMessage) returns (Block) {
   }
   //Use this function instead of GetNowBlock.
-  rpc GetNowBlock2 (EmptyMessage) returns (BlockExtention) {
+  rpc GetNowBlock2 (EmptyMessage) returns (BlockExtension) {
   }
   //Please use GetBlockByNum2 instead of this function.
   rpc GetBlockByNum (NumberMessage) returns (Block) {
   }
   //Use this function instead of GetBlockByNum.
-  rpc GetBlockByNum2 (NumberMessage) returns (BlockExtention) {
+  rpc GetBlockByNum2 (NumberMessage) returns (BlockExtension) {
   }
 
   rpc GetTransactionCountByBlockNum (NumberMessage) returns (NumberMessage) {
@@ -246,18 +246,18 @@ service Wallet {
   rpc GetBlockByLimitNext (BlockLimit) returns (BlockList) {
   }
   //Use this function instead of GetBlockByLimitNext.
-  rpc GetBlockByLimitNext2 (BlockLimit) returns (BlockListExtention) {
+  rpc GetBlockByLimitNext2 (BlockLimit) returns (BlockListExtension) {
   }
   //Please use GetBlockByLatestNum2 instead of this function.
   rpc GetBlockByLatestNum (NumberMessage) returns (BlockList) {
   }
   //Use this function instead of GetBlockByLatestNum.
-  rpc GetBlockByLatestNum2 (NumberMessage) returns (BlockListExtention) {
+  rpc GetBlockByLatestNum2 (NumberMessage) returns (BlockListExtension) {
   }
   rpc GetTransactionById (BytesMessage) returns (Transaction) {
   }
 
-  rpc DeployContract (CreateSmartContract) returns (TransactionExtention) {
+  rpc DeployContract (CreateSmartContract) returns (TransactionExtension) {
   }
 
   rpc GetContract (BytesMessage) returns (SmartContract) {
@@ -266,16 +266,16 @@ service Wallet {
   rpc GetContractInfo (BytesMessage) returns (SmartContractDataWrapper) {
   }
 
-  rpc TriggerContract (TriggerSmartContract) returns (TransactionExtention) {
+  rpc TriggerContract (TriggerSmartContract) returns (TransactionExtension) {
   }
 
-  rpc TriggerConstantContract (TriggerSmartContract) returns (TransactionExtention) {
+  rpc TriggerConstantContract (TriggerSmartContract) returns (TransactionExtension) {
   }
 
   rpc EstimateEnergy (TriggerSmartContract) returns (EstimateEnergyMessage) {
   }
 
-  rpc ClearContractABI (ClearABIContract) returns (TransactionExtention) {
+  rpc ClearContractABI (ClearABIContract) returns (TransactionExtension) {
   }
 
   rpc ListWitnesses (EmptyMessage) returns (WitnessList) {
@@ -338,7 +338,7 @@ service Wallet {
   rpc GetTransactionInfoById (BytesMessage) returns (TransactionInfo) {
   }
 
-  rpc AccountPermissionUpdate (AccountPermissionUpdateContract) returns (TransactionExtention) {
+  rpc AccountPermissionUpdate (AccountPermissionUpdateContract) returns (TransactionExtension) {
   }
 
   rpc GetTransactionSignWeight (Transaction) returns (TransactionSignWeight) {
@@ -358,12 +358,12 @@ service Wallet {
   rpc GetBrokerageInfo (BytesMessage) returns (NumberMessage) {
   };
 
-  rpc UpdateBrokerage (UpdateBrokerageContract) returns (TransactionExtention) {
+  rpc UpdateBrokerage (UpdateBrokerageContract) returns (TransactionExtension) {
 
   };
 
   // for shieldedTransaction
-  rpc CreateShieldedTransaction (PrivateParameters) returns (TransactionExtention) {
+  rpc CreateShieldedTransaction (PrivateParameters) returns (TransactionExtension) {
   };
 
   rpc GetMerkleTreeVoucherInfo (OutputPointInfo) returns (IncrementalMerkleVoucherInfo) {
@@ -408,7 +408,7 @@ service Wallet {
   rpc IsSpend (NoteParameters) returns (SpendResult) {
   }
 
-  rpc CreateShieldedTransactionWithoutSpendAuthSig (PrivateParametersWithoutAsk) returns (TransactionExtention) {
+  rpc CreateShieldedTransactionWithoutSpendAuthSig (PrivateParametersWithoutAsk) returns (TransactionExtension) {
   };
 
   rpc GetShieldTransactionHash (Transaction) returns (BytesMessage) {
@@ -440,7 +440,7 @@ service Wallet {
   };
   // end for shieldedTransaction
 
-  rpc CreateCommonTransaction (Transaction) returns (TransactionExtention) {
+  rpc CreateCommonTransaction (Transaction) returns (TransactionExtension) {
   };
 
   rpc GetTransactionInfoByBlockNum (NumberMessage) returns (TransactionInfoList) {
@@ -458,7 +458,7 @@ service Wallet {
   rpc GetPendingSize (EmptyMessage) returns (NumberMessage) {
   }
 
-  rpc GetBlock (BlockReq) returns (BlockExtention) {
+  rpc GetBlock (BlockReq) returns (BlockExtension) {
   }
 
   rpc GetBandwidthPrices (EmptyMessage) returns (PricesResponseMessage) {
@@ -500,13 +500,13 @@ service WalletSolidity {
   rpc GetNowBlock (EmptyMessage) returns (Block) {
   }
   //Use this function instead of GetNowBlock.
-  rpc GetNowBlock2 (EmptyMessage) returns (BlockExtention) {
+  rpc GetNowBlock2 (EmptyMessage) returns (BlockExtension) {
   }
   //Please use GetBlockByNum2 instead of this function.
   rpc GetBlockByNum (NumberMessage) returns (Block) {
   }
   //Use this function instead of GetBlockByNum.
-  rpc GetBlockByNum2 (NumberMessage) returns (BlockExtention) {
+  rpc GetBlockByNum2 (NumberMessage) returns (BlockExtension) {
   }
 
   rpc GetTransactionCountByBlockNum (NumberMessage) returns (NumberMessage) {
@@ -578,7 +578,7 @@ service WalletSolidity {
   rpc GetBrokerageInfo (BytesMessage) returns (NumberMessage) {
   };
 
-  rpc TriggerConstantContract (TriggerSmartContract) returns (TransactionExtention) {
+  rpc TriggerConstantContract (TriggerSmartContract) returns (TransactionExtension) {
   }
 
   rpc EstimateEnergy (TriggerSmartContract) returns (EstimateEnergyMessage) {
@@ -604,7 +604,7 @@ service WalletSolidity {
 
   rpc GetBurnTrx (EmptyMessage) returns (NumberMessage) {
   }
-  rpc GetBlock (BlockReq) returns (BlockExtention) {
+  rpc GetBlock (BlockReq) returns (BlockExtension) {
   }
   rpc GetBandwidthPrices (EmptyMessage) returns (PricesResponseMessage) {
   }
@@ -618,13 +618,13 @@ service WalletExtension {
   rpc GetTransactionsFromThis (AccountPaginated) returns (TransactionList) {
   }
   //Use this function instead of GetTransactionsFromThis.
-  rpc GetTransactionsFromThis2 (AccountPaginated) returns (TransactionListExtention) {
+  rpc GetTransactionsFromThis2 (AccountPaginated) returns (TransactionListExtension) {
   }
   //Please use GetTransactionsToThis2 instead of this function.
   rpc GetTransactionsToThis (AccountPaginated) returns (TransactionList) {
   }
   //Use this function instead of GetTransactionsToThis.
-  rpc GetTransactionsToThis2 (AccountPaginated) returns (TransactionListExtention) {
+  rpc GetTransactionsToThis2 (AccountPaginated) returns (TransactionListExtension) {
   }
 };
 
@@ -656,7 +656,7 @@ message Return {
     SIGERROR = 1; // error in signature
     CONTRACT_VALIDATE_ERROR = 2;
     CONTRACT_EXE_ERROR = 3;
-    BANDWITH_ERROR = 4;
+    BANDWIDTH_ERROR = 4;
     DUP_TRANSACTION_ERROR = 5;
     TAPOS_ERROR = 6;
     TOO_BIG_TRANSACTION_ERROR = 7;
@@ -828,7 +828,7 @@ message PaginatedMessage {
   int64 limit = 2;
 }
 
-message TransactionExtention {
+message TransactionExtension {
   Transaction transaction = 1;
   bytes txid = 2; //transaction id =  sha256(transaction.rowdata)
   repeated bytes constant_result = 3;
@@ -844,18 +844,18 @@ message EstimateEnergyMessage {
   int64 energy_required = 2;
 }
 
-message BlockExtention {
-  repeated TransactionExtention transactions = 1;
+message BlockExtension {
+  repeated TransactionExtension transactions = 1;
   BlockHeader block_header = 2;
   bytes blockid = 3;
 }
 
-message BlockListExtention {
-  repeated BlockExtention block = 1;
+message BlockListExtension {
+  repeated BlockExtension block = 1;
 }
 
-message TransactionListExtention {
-  repeated TransactionExtention transaction = 1;
+message TransactionListExtension {
+  repeated TransactionExtension transaction = 1;
 }
 
 message BlockIncrementalMerkleTree {
@@ -881,7 +881,7 @@ message TransactionSignWeight {
   repeated bytes approved_list = 2;
   int64 current_weight = 3;
   Result result = 4;
-  TransactionExtention transaction = 5;
+  TransactionExtension transaction = 5;
 }
 
 message TransactionApprovedList {
@@ -898,7 +898,7 @@ message TransactionApprovedList {
 
   repeated bytes approved_list = 2;
   Result result = 4;
-  TransactionExtention transaction = 5;
+  TransactionExtension transaction = 5;
 }
 
 message IvkDecryptParameters {
diff --git a/core/Tron.proto b/core/Tron.proto
index a68e841bb..1bbe23e82 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -166,7 +166,7 @@ message Account {
   // this account create time
   int64 create_time = 0x09;
   // this last operation time, including transfer, voting and so on. //FIXME fix grammar
-  int64 latest_opration_time = 10;
+  int64 latest_operation_time = 10;
   // witness block producing allowance
   int64 allowance = 0x0B;
   // last withdraw time
@@ -293,7 +293,7 @@ message Votes {
   repeated Vote new_votes = 3;
 }
 
-// Transcation
+// Transaction
 
 message TXOutput {
   int64 value = 1;
@@ -386,7 +386,7 @@ message Transaction {
 
   message Result {
     enum code {
-      SUCESS = 0;
+      SUCCESS = 0;
       FAILED = 1;
     }
     enum contractResult {
@@ -445,14 +445,14 @@ message Transaction {
   }
 
   raw raw_data = 1;
-  // only support size = 1,  repeated list here for muti-sig extension
+  // only support size = 1,  repeated list here for multi-sig extension
   repeated bytes signature = 2;
   repeated Result ret = 5;
 }
 
 message TransactionInfo {
   enum code {
-    SUCESS = 0;
+    SUCCESS = 0;
     FAILED = 1;
   }
   message Log {
@@ -582,7 +582,7 @@ enum ReasonCode {
   DUPLICATE_PEER = 0x05;
   INCOMPATIBLE_PROTOCOL = 0x06;
   RANDOM_ELIMINATION = 0x07;
-  PEER_QUITING = 0x08;
+  PEER_QUITTING = 0x08;
   UNEXPECTED_IDENTITY = 0x09;
   LOCAL_IDENTITY = 0x0A;
   PING_TIMEOUT = 0x0B;
@@ -635,7 +635,7 @@ message InternalTransaction {
   bytes hash = 1;
   // the one send trx (TBD: or token) via function
   bytes caller_address = 2;
-  // the one recieve trx (TBD: or token) via function
+  // the one receive trx (TBD: or token) via function
   bytes transferTo_address = 3;
   message CallValueInfo {
     // trx (TBD: or token) value
diff --git a/core/contract/smart_contract.proto b/core/contract/smart_contract.proto
index c913f7f75..131a70fbf 100644
--- a/core/contract/smart_contract.proto
+++ b/core/contract/smart_contract.proto
@@ -43,7 +43,7 @@ message SmartContract {
       bool payable = 7;
       StateMutabilityType stateMutability = 8;
     }
-    repeated Entry entrys = 1;
+    repeated Entry entries = 1;
   }
   bytes origin_address = 1;
   bytes contract_address = 2;