diff --git a/README.md b/README.md
index e409e0407..6fc904a43 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,6 @@ git subtree pull --prefix src/main/protos/ protocol master
 
 ## Run the included *.sh files to initialize the dependencies
 
+# Note❕
+To reduce the size of the generated JavaScript bundle, unnecessary parts of the Java-Tron protocol definition were removed.
+
diff --git a/core/Discover.proto b/core/Discover.proto
deleted file mode 100644
index 4cc0d83b0..000000000
--- a/core/Discover.proto
+++ /dev/null
@@ -1,44 +0,0 @@
-syntax = "proto3";
-
-package protocol;
-
-
-option java_package = "org.tron.protos"; //Specify the name of the package that generated the Java file
-option java_outer_classname = "Discover"; //Specify the class name of the generated Java file
-option go_package = "github.com/tronprotocol/grpc-gateway/core";
-
-message Endpoint {
-  bytes address = 1;
-  int32 port = 2;
-  bytes nodeId = 3;
-}
-
-message PingMessage {
-  Endpoint from = 1;
-  Endpoint to = 2;
-  int32 version = 3;
-  int64 timestamp = 4;
-}
-
-message PongMessage {
-  Endpoint from = 1;
-  int32 echo = 2;
-  int64 timestamp = 3;
-}
-
-message FindNeighbours {
-  Endpoint from = 1;
-  bytes targetId = 2;
-  int64 timestamp = 3;
-}
-
-message Neighbours {
-  Endpoint from = 1;
-  repeated Endpoint neighbours = 2;
-  int64 timestamp = 3;
-}
-
-message BackupMessage {
-  bool flag = 1;
-  int32 priority = 2;
-}
\ No newline at end of file
diff --git a/core/Tron.proto b/core/Tron.proto
index 493b07bd0..290de38b8 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -1,7 +1,6 @@
 syntax = "proto3";
 
 import "google/protobuf/any.proto";
-import "core/Discover.proto";
 
 package protocol;
 
@@ -58,75 +57,6 @@ message Exchange {
   int64 second_token_balance = 9;
 }
 
-// market
-message MarketOrder {
-    bytes order_id = 1;
-    bytes owner_address = 2;
-    int64 create_time = 3;
-    bytes sell_token_id = 4;
-    int64 sell_token_quantity = 5;
-    bytes buy_token_id = 6;
-    int64 buy_token_quantity = 7; // min to receive
-    int64 sell_token_quantity_remain = 9;
-    // When state != ACTIVE and sell_token_quantity_return !=0,
-    //it means that some sell tokens are returned to the account due to insufficient remaining amount
-    int64 sell_token_quantity_return = 10;
-
-    enum State {
-      ACTIVE = 0;
-      INACTIVE = 1;
-      CANCELED = 2;
-    }
-    State state = 11;
-
-    bytes prev = 12;
-    bytes next = 13;
-}
-
-message MarketOrderList {
-    repeated MarketOrder orders = 1;
-}
-
-message MarketOrderPairList {
-  repeated MarketOrderPair orderPair = 1;
-}
-
-message MarketOrderPair{
-    bytes sell_token_id = 1;
-    bytes buy_token_id = 2;
-}
-
-message MarketAccountOrder {
-  bytes owner_address = 1;
-  repeated bytes orders = 2; // order_id list
-  int64 count = 3; // active count
-  int64 total_count = 4;
-}
-
-message MarketPrice {
-  int64 sell_token_quantity = 1;
-  int64 buy_token_quantity = 2;
-}
-
-message MarketPriceList {
-  bytes sell_token_id = 1;
-  bytes buy_token_id = 2;
-  repeated MarketPrice prices = 3;
-}
-
-message MarketOrderIdList {
-  bytes head = 1;
-  bytes tail = 2;
-}
-
-message ChainParameters {
-  repeated ChainParameter chainParameter = 1;
-  message ChainParameter {
-    string key = 1;
-    int64 value = 2;
-  }
-}
-
 /* Account */
 message Account {
   /* frozen balance */
@@ -270,37 +200,6 @@ message Votes {
   repeated Vote new_votes = 3;
 }
 
-// Transcation
-
-message TXOutput {
-  int64 value = 1;
-  bytes pubKeyHash = 2;
-}
-
-message TXInput {
-  message raw {
-    bytes txID = 1;
-    int64 vout = 2;
-    bytes pubKey = 3;
-  }
-  raw raw_data = 1;
-  bytes signature = 4;
-}
-
-message TXOutputs {
-  repeated TXOutput outputs = 1;
-}
-
-message ResourceReceipt {
-  int64 energy_usage = 1;
-  int64 energy_fee = 2;
-  int64 origin_energy_usage = 3;
-  int64 energy_usage_total = 4;
-  int64 net_usage = 5;
-  int64 net_fee = 6;
-  Transaction.Result.contractResult result = 7;
-}
-
 message MarketOrderDetail {
   bytes makerOrderId = 1;
   bytes takerOrderId = 2;
@@ -416,442 +315,3 @@ message Transaction {
   repeated bytes signature = 2;
   repeated Result ret = 5;
 }
-
-message TransactionInfo {
-  enum code {
-    SUCESS = 0;
-    FAILED = 1;
-  }
-  message Log {
-    bytes address = 1;
-    repeated bytes topics = 2;
-    bytes data = 3;
-  }
-  bytes id = 1;
-  int64 fee = 2;
-  int64 blockNumber = 3;
-  int64 blockTimeStamp = 4;
-  repeated bytes contractResult = 5;
-  bytes contract_address = 6;
-  ResourceReceipt receipt = 7;
-  repeated Log log = 8;
-  code result = 9;
-  bytes resMessage = 10;
-
-  string assetIssueID = 14;
-  int64 withdraw_amount = 15;
-  int64 unfreeze_amount = 16;
-  repeated InternalTransaction internal_transactions = 17;
-  int64 exchange_received_amount = 18;
-  int64 exchange_inject_another_amount = 19;
-  int64 exchange_withdraw_another_amount = 20;
-  int64 exchange_id = 21;
-  int64 shielded_transaction_fee = 22;
-
-  bytes orderId = 25;
-  repeated MarketOrderDetail orderDetails = 26;
-  int64 packingFee = 27;
-}
-
-message TransactionRet {
-  int64 blockNumber = 1;
-  int64 blockTimeStamp = 2;
-  repeated TransactionInfo transactioninfo = 3;
-}
-
-message Transactions {
-  repeated Transaction transactions = 1;
-}
-
-message TransactionSign {
-  Transaction transaction = 1;
-  bytes privateKey = 2;
-}
-
-message BlockHeader {
-  message raw {
-    int64 timestamp = 1;
-    bytes txTrieRoot = 2;
-    bytes parentHash = 3;
-    //bytes nonce = 5;
-    //bytes difficulty = 6;
-    int64 number = 7;
-    int64 witness_id = 8;
-    bytes witness_address = 9;
-    int32 version = 10;
-    bytes accountStateRoot = 11;
-  }
-  raw raw_data = 1;
-  bytes witness_signature = 2;
-}
-
-// block
-message Block {
-  repeated Transaction transactions = 1;
-  BlockHeader block_header = 2;
-}
-
-message ChainInventory {
-  message BlockId {
-    bytes hash = 1;
-    int64 number = 2;
-  }
-  repeated BlockId ids = 1;
-  int64 remain_num = 2;
-}
-
-// Inventory
-message BlockInventory {
-  enum Type {
-    SYNC = 0;
-    ADVTISE = 1;
-    FETCH = 2;
-  }
-
-  message BlockId {
-    bytes hash = 1;
-    int64 number = 2;
-  }
-  repeated BlockId ids = 1;
-  Type type = 2;
-}
-
-message Inventory {
-  enum InventoryType {
-    TRX = 0;
-    BLOCK = 1;
-  }
-  InventoryType type = 1;
-  repeated bytes ids = 2;
-}
-
-message Items {
-  enum ItemType {
-    ERR = 0;
-    TRX = 1;
-    BLOCK = 2;
-    BLOCKHEADER = 3;
-  }
-
-  ItemType type = 1;
-  repeated Block blocks = 2;
-  repeated BlockHeader block_headers = 3;
-  repeated Transaction transactions = 4;
-}
-
-// DynamicProperties
-message DynamicProperties {
-  int64 last_solidity_block_num = 1;
-}
-
-enum ReasonCode {
-  REQUESTED = 0x00;
-  BAD_PROTOCOL = 0x02;
-  TOO_MANY_PEERS = 0x04;
-  DUPLICATE_PEER = 0x05;
-  INCOMPATIBLE_PROTOCOL = 0x06;
-  NULL_IDENTITY = 0x07;
-  PEER_QUITING = 0x08;
-  UNEXPECTED_IDENTITY = 0x09;
-  LOCAL_IDENTITY = 0x0A;
-  PING_TIMEOUT = 0x0B;
-  USER_REASON = 0x10;
-  RESET = 0x11;
-  SYNC_FAIL = 0x12;
-  FETCH_FAIL = 0x13;
-  BAD_TX = 0x14;
-  BAD_BLOCK = 0x15;
-  FORKED = 0x16;
-  UNLINKABLE = 0x17;
-  INCOMPATIBLE_VERSION = 0x18;
-  INCOMPATIBLE_CHAIN = 0x19;
-  TIME_OUT = 0x20;
-  CONNECT_FAIL = 0x21;
-  TOO_MANY_PEERS_WITH_SAME_IP = 0x22;
-  LIGHT_NODE_SYNC_FAIL = 0x23;
-  UNKNOWN = 0xFF;
-}
-
-message DisconnectMessage {
-  ReasonCode reason = 1;
-}
-
-message HelloMessage {
-  message BlockId {
-    bytes hash = 1;
-    int64 number = 2;
-  }
-
-  Endpoint from = 1;
-  int32 version = 2;
-  int64 timestamp = 3;
-  BlockId genesisBlockId = 4;
-  BlockId solidBlockId = 5;
-  BlockId headBlockId = 6;
-  bytes address = 7;
-  bytes signature = 8;
-  int32 nodeType = 9;
-  int64 lowestBlockNum = 10;
-}
-
-message InternalTransaction {
-  // internalTransaction identity, the root InternalTransaction hash
-  // should equals to root transaction id.
-  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
-  bytes transferTo_address = 3;
-  message CallValueInfo {
-    // trx (TBD: or token) value
-    int64 callValue = 1;
-    // TBD: tokenName, trx should be empty
-    string tokenId = 2;
-  }
-  repeated CallValueInfo callValueInfo = 4;
-  bytes note = 5;
-  bool rejected = 6;
-  string extra = 7;
-}
-
-message DelegatedResourceAccountIndex {
-  bytes account = 1;
-  repeated bytes fromAccounts = 2;
-  repeated bytes toAccounts = 3;
-  int64 timestamp = 4;
-}
-
-message NodeInfo {
-  int64 beginSyncNum = 1;
-  string block = 2;
-  string solidityBlock = 3;
-  //connect information
-  int32 currentConnectCount = 4;
-  int32 activeConnectCount = 5;
-  int32 passiveConnectCount = 6;
-  int64 totalFlow = 7;
-  repeated PeerInfo peerInfoList = 8;
-  ConfigNodeInfo configNodeInfo = 9;
-  MachineInfo machineInfo = 10;
-  map<string, string> cheatWitnessInfoMap = 11;
-
-  message PeerInfo {
-    string lastSyncBlock = 1;
-    int64 remainNum = 2;
-    int64 lastBlockUpdateTime = 3;
-    bool syncFlag = 4;
-    int64 headBlockTimeWeBothHave = 5;
-    bool needSyncFromPeer = 6;
-    bool needSyncFromUs = 7;
-    string host = 8;
-    int32 port = 9;
-    string nodeId = 10;
-    int64 connectTime = 11;
-    double avgLatency = 12;
-    int32 syncToFetchSize = 13;
-    int64 syncToFetchSizePeekNum = 14;
-    int32 syncBlockRequestedSize = 15;
-    int64 unFetchSynNum = 16;
-    int32 blockInPorcSize = 17;
-    string headBlockWeBothHave = 18;
-    bool isActive = 19;
-    int32 score = 20;
-    int32 nodeCount = 21;
-    int64 inFlow = 22;
-    int32 disconnectTimes = 23;
-    string localDisconnectReason = 24;
-    string remoteDisconnectReason = 25;
-  }
-
-  message ConfigNodeInfo {
-    string codeVersion = 1;
-    string p2pVersion = 2;
-    int32 listenPort = 3;
-    bool discoverEnable = 4;
-    int32 activeNodeSize = 5;
-    int32 passiveNodeSize = 6;
-    int32 sendNodeSize = 7;
-    int32 maxConnectCount = 8;
-    int32 sameIpMaxConnectCount = 9;
-    int32 backupListenPort = 10;
-    int32 backupMemberSize = 11;
-    int32 backupPriority = 12;
-    int32 dbVersion = 13;
-    int32 minParticipationRate = 14;
-    bool supportConstant = 15;
-    double minTimeRatio = 16;
-    double maxTimeRatio = 17;
-    int64 allowCreationOfContracts = 18;
-    int64 allowAdaptiveEnergy = 19;
-  }
-
-  message MachineInfo {
-    int32 threadCount = 1;
-    int32 deadLockThreadCount = 2;
-    int32 cpuCount = 3;
-    int64 totalMemory = 4;
-    int64 freeMemory = 5;
-    double cpuRate = 6;
-    string javaVersion = 7;
-    string osName = 8;
-    int64 jvmTotalMemory = 9;
-    int64 jvmFreeMemory = 10;
-    double processCpuRate = 11;
-    repeated MemoryDescInfo memoryDescInfoList = 12;
-    repeated DeadLockThreadInfo deadLockThreadInfoList = 13;
-
-    message MemoryDescInfo {
-      string name = 1;
-      int64 initSize = 2;
-      int64 useSize = 3;
-      int64 maxSize = 4;
-      double useRate = 5;
-    }
-
-    message DeadLockThreadInfo {
-      string name = 1;
-      string lockName = 2;
-      string lockOwner = 3;
-      string state = 4;
-      int64 blockTime = 5;
-      int64 waitTime = 6;
-      string stackTrace = 7;
-    }
-  }
-}
-
-message MetricsInfo {
-  int64 interval = 1;
-  NodeInfo node = 2;
-  BlockChainInfo blockchain = 3;
-  NetInfo net = 4;
-
-  message NodeInfo {
-    string ip = 1;
-    int32 nodeType = 2;
-    string version = 3;
-    int32 backupStatus = 4;
-  }
-
-  message BlockChainInfo {
-    int64 headBlockNum = 1;
-    int64 headBlockTimestamp = 2;
-    string headBlockHash = 3;
-    int32 forkCount = 4;
-    int32 failForkCount = 5;
-    RateInfo blockProcessTime = 6;
-    RateInfo tps = 7;
-    int32 transactionCacheSize = 8;
-    RateInfo missedTransaction = 9;
-    repeated Witness witnesses = 10;
-    int64 failProcessBlockNum = 11;
-    string failProcessBlockReason = 12;
-    repeated DupWitness dupWitness = 13;
-
-    message Witness {
-      string address = 1;
-      int32 version = 2;
-    }
-
-    message DupWitness {
-      string address = 1;
-      int64 blockNum = 2;
-      int32 count = 3;
-    }
-  }
-
-  message RateInfo {
-    int64 count = 1;
-    double meanRate = 2;
-    double oneMinuteRate = 3;
-    double fiveMinuteRate = 4;
-    double fifteenMinuteRate = 5;
-  }
-
-  message NetInfo {
-    int32 errorProtoCount = 1;
-    ApiInfo api = 2;
-    int32 connectionCount = 3;
-    int32 validConnectionCount = 4;
-    RateInfo tcpInTraffic = 5;
-    RateInfo tcpOutTraffic = 6;
-    int32 disconnectionCount = 7;
-    repeated DisconnectionDetailInfo disconnectionDetail = 8;
-    RateInfo udpInTraffic = 9;
-    RateInfo udpOutTraffic = 10;
-    LatencyInfo latency = 11;
-
-    message ApiInfo {
-      RateInfo qps = 1;
-      RateInfo failQps = 2;
-      RateInfo outTraffic = 3;
-      repeated ApiDetailInfo detail = 4;
-
-      message ApiDetailInfo {
-        string name = 1;
-        RateInfo qps = 2;
-        RateInfo failQps = 3;
-        RateInfo outTraffic = 4;
-      }
-    }
-
-    message DisconnectionDetailInfo {
-      string reason = 1;
-      int32 count = 2;
-    }
-
-    message LatencyInfo {
-      int32 top99 = 1;
-      int32 top95 = 2;
-      int32 top75 = 3;
-      int32 totalCount = 4;
-      int32 delay1S = 5;
-      int32 delay2S = 6;
-      int32 delay3S = 7;
-      repeated LatencyDetailInfo detail = 8;
-
-      message LatencyDetailInfo {
-        string witness = 1;
-        int32 top99 = 2;
-        int32 top95 = 3;
-        int32 top75 = 4;
-        int32 count = 5;
-        int32 delay1S = 6;
-        int32 delay2S = 7;
-        int32 delay3S = 8;
-      }
-    }
-  }
-}
-
-message PBFTMessage {
-  enum MsgType {
-    VIEW_CHANGE = 0;
-    REQUEST = 1;
-    PREPREPARE = 2;
-    PREPARE = 3;
-    COMMIT = 4;
-  }
-  enum DataType {
-    BLOCK = 0;
-    SRL = 1;
-  }
-  message Raw {
-    MsgType msg_type = 1;
-    DataType data_type = 2;
-    int64 view_n = 3;
-    int64 epoch = 4;
-    bytes data = 5;
-  }
-  Raw raw_data = 1;
-  bytes signature = 2;
-}
-
-message PBFTCommitResult {
-  bytes data = 1;
-  repeated bytes signature = 2;
-}
-
-message SRL {
-  repeated bytes srAddress = 1;
-}
diff --git a/core/TronInventoryItems.proto b/core/TronInventoryItems.proto
deleted file mode 100644
index a82d2de45..000000000
--- a/core/TronInventoryItems.proto
+++ /dev/null
@@ -1,12 +0,0 @@
-syntax = "proto3";
-
-package protocol;
-
-option java_package = "org.tron.protos"; //Specify the name of the package that generated the Java file
-option java_outer_classname = "TronInventoryItems"; //Specify the class name of the generated Java file
-option go_package = "github.com/tronprotocol/grpc-gateway/core";
-
-message InventoryItems {
-  int32 type = 1;
-  repeated bytes items = 2;
-}
\ No newline at end of file
diff --git a/core/contract/market_contract.proto b/core/contract/market_contract.proto
deleted file mode 100644
index e12743500..000000000
--- a/core/contract/market_contract.proto
+++ /dev/null
@@ -1,19 +0,0 @@
-syntax = "proto3";
-
-package protocol;
-
-option java_package = "org.tron.protos.contract"; //Specify the name of the package that generated the Java file
-option go_package = "github.com/tronprotocol/grpc-gateway/core";
-
-message MarketSellAssetContract {
-    bytes owner_address = 1;
-    bytes sell_token_id = 2;
-    int64 sell_token_quantity = 3;
-    bytes buy_token_id = 4;
-    int64 buy_token_quantity = 5; // min to receive
-}
-
-message MarketCancelOrderContract {
-    bytes owner_address = 1;
-    bytes order_id = 2;
-}
\ No newline at end of file
diff --git a/core/contract/shield_contract.proto b/core/contract/shield_contract.proto
deleted file mode 100644
index 660f9ddf7..000000000
--- a/core/contract/shield_contract.proto
+++ /dev/null
@@ -1,81 +0,0 @@
-syntax = "proto3";
-
-package protocol;
-
-option java_package = "org.tron.protos.contract"; //Specify the name of the package that generated the Java file
-//option java_outer_classname = "ShieldedTransferContract"; //Specify the class name of the generated Java file
-option go_package = "github.com/tronprotocol/grpc-gateway/core";
-
-// for shielded transaction
-
-message AuthenticationPath {
-  repeated bool value = 1;
-}
-
-message MerklePath {
-  repeated AuthenticationPath authentication_paths = 1;
-  repeated bool index = 2;
-  bytes rt = 3;
-}
-
-message OutputPoint {
-  bytes hash = 1;
-  int32 index = 2;
-}
-
-message OutputPointInfo {
-  repeated OutputPoint out_points = 1;
-  int32 block_num = 2;
-}
-
-message PedersenHash {
-  bytes content = 1;
-}
-
-message IncrementalMerkleTree {
-  PedersenHash left = 1;
-  PedersenHash right = 2;
-  repeated PedersenHash parents = 3;
-}
-
-message IncrementalMerkleVoucher {
-  IncrementalMerkleTree tree = 1;
-  repeated PedersenHash filled = 2;
-  IncrementalMerkleTree cursor = 3;
-  int64 cursor_depth = 4;
-  bytes rt = 5;
-  OutputPoint output_point = 10;
-}
-
-message IncrementalMerkleVoucherInfo {
-  repeated IncrementalMerkleVoucher vouchers = 1;
-  repeated bytes paths = 2;
-}
-
-message SpendDescription {
-  bytes value_commitment = 1;
-  bytes anchor = 2; // merkle root
-  bytes nullifier = 3; // used for check double spend
-  bytes rk = 4; // used for check spend authority signature
-  bytes zkproof = 5;
-  bytes spend_authority_signature = 6;
-}
-
-message ReceiveDescription {
-  bytes value_commitment = 1;
-  bytes note_commitment = 2;
-  bytes epk = 3; // for Encryption
-  bytes c_enc = 4; // Encryption for incoming, decrypt it with ivk
-  bytes c_out = 5; // Encryption for audit, decrypt it with ovk
-  bytes zkproof = 6;
-}
-
-message ShieldedTransferContract {
-  bytes transparent_from_address = 1; // transparent address
-  int64 from_amount = 2;
-  repeated SpendDescription spend_description = 3;
-  repeated ReceiveDescription receive_description = 4;
-  bytes binding_signature = 5;
-  bytes transparent_to_address = 6; // transparent address
-  int64 to_amount = 7; // the amount to transparent to_address
-}
diff --git a/core/tron/account.proto b/core/tron/account.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/block.proto b/core/tron/block.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/delegated_resource.proto b/core/tron/delegated_resource.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/p2p.proto b/core/tron/p2p.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/proposal.proto b/core/tron/proposal.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/transaction.proto b/core/tron/transaction.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/vote.proto b/core/tron/vote.proto
deleted file mode 100644
index e69de29bb..000000000
diff --git a/core/tron/witness.proto b/core/tron/witness.proto
deleted file mode 100644
index e69de29bb..000000000