diff --git a/contracts/dev-contracts/DummyArbitrator.sol b/contracts/dev-contracts/DummyArbitrator.sol
index 161943f..e842c93 100644
--- a/contracts/dev-contracts/DummyArbitrator.sol
+++ b/contracts/dev-contracts/DummyArbitrator.sol
@@ -11,6 +11,8 @@ import {IL1Gateway} from "../interfaces/IL1Gateway.sol";
 contract DummyArbitrator is IArbitrator, OwnableUpgradeable, UUPSUpgradeable, ReentrancyGuardUpgradeable {
     event ReceiveMessage(uint256 value, bytes callData);
 
+    IL1Gateway public primaryChainGateway;
+
     function initialize() external initializer {
         __Ownable_init();
         __UUPSUpgradeable_init();
diff --git a/contracts/dev-contracts/SyncL2TxHashRelayer.sol b/contracts/dev-contracts/SyncL2TxHashRelayer.sol
new file mode 100644
index 0000000..a747adb
--- /dev/null
+++ b/contracts/dev-contracts/SyncL2TxHashRelayer.sol
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
+pragma solidity ^0.8.0;
+
+import {IArbitrator} from "../interfaces/IArbitrator.sol";
+import {IZkLink} from "../interfaces/IZkLink.sol";
+
+contract SyncL2TxHashRelayer {
+    /// @dev The address of the arbitrator contract
+    IArbitrator public immutable ARBITRATOR;
+
+    constructor(IArbitrator _arbitrator) {
+        ARBITRATOR = _arbitrator;
+    }
+
+    function claimPrimaryChainSyncL2TxHashMessage(
+        address _sourceChainCanonicalMessageService,
+        bytes calldata _sourceChainClaimCallData,
+        address _secondaryChainL1Gateway,
+        bytes32 _secondaryChainL2TxHash,
+        bytes32 _primaryChainL2TxHash,
+        bytes calldata _forwardParams
+    ) external payable {
+        // Send l2 tx hash to secondary chain by gateway
+        bytes[] memory gatewayDataList = new bytes[](1);
+        bytes memory callData = abi.encodeCall(IZkLink.syncL2TxHash, (_secondaryChainL2TxHash, _primaryChainL2TxHash));
+        gatewayDataList[0] = abi.encode(_secondaryChainL1Gateway, 0, callData);
+
+        ARBITRATOR.claimMessage{value: msg.value}(
+            _sourceChainCanonicalMessageService,
+            _sourceChainClaimCallData,
+            ARBITRATOR.primaryChainGateway(),
+            0,
+            abi.encode(gatewayDataList),
+            _forwardParams
+        );
+    }
+}
diff --git a/contracts/interfaces/IArbitrator.sol b/contracts/interfaces/IArbitrator.sol
index fbe7634..7e3289b 100644
--- a/contracts/interfaces/IArbitrator.sol
+++ b/contracts/interfaces/IArbitrator.sol
@@ -7,6 +7,9 @@ interface IArbitrator {
     /// @notice Return true if relayer is active
     function isRelayerActive(address _relayer) external view returns (bool);
 
+    /// @notice Return the primary chain gateway
+    function primaryChainGateway() external view returns (IL1Gateway);
+
     /// @notice Enqueue message from EthereumGateway
     /// @dev Used by EthereumGateway to temporarily store message
     /// @param _value The msg value
diff --git a/hardhat.config.js b/hardhat.config.js
index d03d352..e8428d6 100644
--- a/hardhat.config.js
+++ b/hardhat.config.js
@@ -9,6 +9,7 @@ require('./script/deploy_erc20_bridge');
 require('./script/deploy_governance');
 require('./script/deploy_linea_l2_governance');
 require('./script/deploy_zklink_token');
+require('./script/deploy_sync_l2_txHash_relayer');
 
 const BaseConfig = require('./hardhat.base.config');
 
diff --git a/script/deploy_log_name.js b/script/deploy_log_name.js
index cef26ec..d1113e6 100644
--- a/script/deploy_log_name.js
+++ b/script/deploy_log_name.js
@@ -33,6 +33,11 @@ const DEPLOY_LOG_ARBITRATOR_VERIFIED = 'arbitratorVerified';
 const DEPLOY_LOG_ARBITRATOR_TARGET = 'arbitratorTarget';
 const DEPLOY_LOG_ARBITRATOR_TARGET_VERIFIED = 'arbitratorTargetVerified';
 
+// consumed in deploy_sync_l2_txHash_relayer.js
+const DEPLOY_SYNCL2TXHASHRELAYER_LOG_PREFIX = 'deploy_syncL2TxHashRelayer';
+const DEPLOY_LOG_SYNCL2TXHASHRELAYER = 'syncL2TxHashRelayer';
+const DEPLOY_LOG_SYNCL2TXHASHRELAYER_VERIFIED = 'syncL2TxHashRelayerVerified';
+
 // consumed in deploy_governance.js
 const DEPLOY_GOVERNANCE_LOG_PREFIX = 'deploy_governance';
 const DEPLOY_LOG_GOVERNANCE = 'governance';
@@ -85,4 +90,7 @@ module.exports = {
   DEPLOY_LOG_ZKLINK_TOKEN_TARGET,
   DEPLOY_LOG_ZKLINK_TOKEN_PROXY_VERIFIED,
   DEPLOY_LOG_ZKLINK_TOKEN_TARGET_VERIFIED,
+  DEPLOY_SYNCL2TXHASHRELAYER_LOG_PREFIX,
+  DEPLOY_LOG_SYNCL2TXHASHRELAYER,
+  DEPLOY_LOG_SYNCL2TXHASHRELAYER_VERIFIED,
 };
diff --git a/script/deploy_sync_l2_txHash_relayer.js b/script/deploy_sync_l2_txHash_relayer.js
new file mode 100644
index 0000000..c0fa33b
--- /dev/null
+++ b/script/deploy_sync_l2_txHash_relayer.js
@@ -0,0 +1,65 @@
+const fs = require('fs');
+const {
+  verifyContractCode,
+  createOrGetDeployLog,
+  ChainContractDeployer,
+  getDeployTx,
+  readDeployLogField,
+} = require('./utils');
+const logName = require('./deploy_log_name');
+const { task, types } = require('hardhat/config');
+
+function getRelayerContractName() {
+  return 'SyncL2TxHashRelayer';
+}
+
+task('deploySyncL2TxHashRelayer', 'Deploy SyncL2TxHashRelayer')
+  .addParam(
+    'arbitrator',
+    'The arbitrator address (default get from arbitrator deploy log)',
+    undefined,
+    types.string,
+    true,
+  )
+  .addParam('skipVerify', 'Skip verify', false, types.boolean, true)
+  .setAction(async (taskArgs, hardhat) => {
+    let arbitrator = taskArgs.arbitrator;
+    if (arbitrator === undefined) {
+      arbitrator = readDeployLogField(logName.DEPLOY_ARBITRATOR_LOG_PREFIX, logName.DEPLOY_LOG_ARBITRATOR);
+    }
+    let skipVerify = taskArgs.skipVerify;
+    console.log('arbitrator', arbitrator);
+    console.log('skip verify contracts?', skipVerify);
+
+    const contractDeployer = new ChainContractDeployer(hardhat);
+    await contractDeployer.init();
+    const deployerWallet = contractDeployer.deployerWallet;
+
+    const { deployLogPath, deployLog } = createOrGetDeployLog(logName.DEPLOY_SYNCL2TXHASHRELAYER_LOG_PREFIX);
+    deployLog[logName.DEPLOY_LOG_DEPLOYER] = deployerWallet.address;
+    fs.writeFileSync(deployLogPath, JSON.stringify(deployLog, null, 2));
+
+    // deploy syncL2TxHashRelayer
+    let syncL2TxHashRelayerAddr;
+    if (!(logName.DEPLOY_LOG_SYNCL2TXHASHRELAYER in deployLog)) {
+      console.log('deploy syncL2TxHashRelayer...');
+      const contractName = getRelayerContractName();
+      const contract = await contractDeployer.deployContract(contractName, [arbitrator]);
+      const transaction = await getDeployTx(contract);
+      syncL2TxHashRelayerAddr = await contract.getAddress();
+      deployLog[logName.DEPLOY_LOG_SYNCL2TXHASHRELAYER] = syncL2TxHashRelayerAddr;
+      deployLog[logName.DEPLOY_LOG_DEPLOY_TX_HASH] = transaction.hash;
+      deployLog[logName.DEPLOY_LOG_DEPLOY_BLOCK_NUMBER] = transaction.blockNumber;
+      fs.writeFileSync(deployLogPath, JSON.stringify(deployLog, null, 2));
+    } else {
+      syncL2TxHashRelayerAddr = deployLog[logName.DEPLOY_LOG_SYNCL2TXHASHRELAYER];
+    }
+    console.log('syncL2TxHashRelayer', syncL2TxHashRelayerAddr);
+
+    // verify target contract
+    if (!(logName.DEPLOY_LOG_SYNCL2TXHASHRELAYER_VERIFIED in deployLog) && !skipVerify) {
+      await verifyContractCode(hardhat, syncL2TxHashRelayerAddr, [arbitrator]);
+      deployLog[logName.DEPLOY_LOG_SYNCL2TXHASHRELAYER_VERIFIED] = true;
+      fs.writeFileSync(deployLogPath, JSON.stringify(deployLog, null, 2));
+    }
+  });