diff --git a/src/base/safe-service/ceramic.service.ts b/src/base/safe-service/ceramic.service.ts
index c2858f5..61c6590 100644
--- a/src/base/safe-service/ceramic.service.ts
+++ b/src/base/safe-service/ceramic.service.ts
@@ -93,4 +93,56 @@ export class CeramicService extends SafeService {
 
     return Promise.resolve();
   }
+
+  async getTransactionConfirmations(
+    safeTxHash: string
+  ): Promise<SafeMultisigConfirmationResponse[]> {
+    if (!this.composeClient) {
+      await this.init();
+    }
+    try {
+      const confirmationsIndex: ConfirmationIndexData = (await this
+        .composeClient.executeQuery(`
+            query ConfirmationIndex {
+                confirmationIndex(
+                    first: 99
+                    filters: { where: { transactionHash: { equalTo: "${safeTxHash}" } } }
+                ) {
+                    edges {
+                        node {
+                            owner
+                            id
+                            signature
+                            signatureType
+                            submissionDate
+                            transactionHash
+                            confirmationType
+                        }
+                    }
+                }
+            }
+        `)) as ConfirmationIndexData;
+      const confirmations = confirmationsIndex.data.confirmationIndex.edges
+        .map((edge) => edge.node)
+        .filter((confirmation) => {
+          const { signature } = confirmation;
+          let signatureV: number = parseInt(signature.slice(-2), 16);
+          // must be signed by with prefix, otherwise, we can't verify this message
+          if (signatureV !== 31 && signatureV !== 32) {
+            return false;
+          }
+          signatureV -= 4;
+          const normalizedSignature =
+            signature.slice(0, -2) + signatureV.toString(16);
+          return (
+            ethers
+              .verifyMessage(ethers.getBytes(safeTxHash), normalizedSignature)
+              .toLowerCase() === confirmation.owner.toLowerCase()
+          );
+        });
+      return confirmations as SafeMultisigConfirmationResponse[];
+    } catch (error) {
+      // console.error('Error fetching transaction:', error);
+    }
+  }
 }
diff --git a/src/base/safe-service/safe.service.ts b/src/base/safe-service/safe.service.ts
index 79338b4..16cb42a 100644
--- a/src/base/safe-service/safe.service.ts
+++ b/src/base/safe-service/safe.service.ts
@@ -9,4 +9,7 @@ export abstract class SafeService {
     this.url = url;
   }
   abstract proposeTransaction(prop: ProposeTransactionProps): Promise<void>;
+  abstract getTransactionConfirmations(
+    safeTxHash: string
+  ): Promise<SafeMultisigConfirmationResponse[]>;
 }
diff --git a/src/base/safe-service/safeglobal.service.ts b/src/base/safe-service/safeglobal.service.ts
index c51ba9a..ced4a3f 100644
--- a/src/base/safe-service/safeglobal.service.ts
+++ b/src/base/safe-service/safeglobal.service.ts
@@ -16,4 +16,12 @@ export class SafeGlobalService extends SafeService {
   async proposeTransaction(props: ProposeTransactionProps): Promise<void> {
     await this.safeService.proposeTransaction(props);
   }
+
+
+  async getTransactionConfirmations(
+    safeTxHash: string
+  ): Promise<SafeMultisigConfirmationResponse[]> {
+    const transaction = await this.safeService.getTransaction(safeTxHash);
+    return transaction?.confirmations;
+  }
 }
diff --git a/src/base/safe-service/single.service.ts b/src/base/safe-service/single.service.ts
index ad55b9d..e575654 100644
--- a/src/base/safe-service/single.service.ts
+++ b/src/base/safe-service/single.service.ts
@@ -11,4 +11,22 @@ export class SingleService extends SafeService {
   async proposeTransaction(props: ProposeTransactionProps): Promise<void> {
     this.props = props;
   }
+
+  async getTransactionConfirmations(
+    safeTxHash: string
+  ): Promise<SafeMultisigConfirmationResponse[]> {
+    if (safeTxHash !== this.props?.safeTxHash) {
+      return [];
+    }
+    return [
+      {
+        owner: this.props.senderAddress,
+        signature: this.props.senderSignature,
+        signatureType: "ECDSA",
+        transactionHash: safeTxHash,
+        submissionDate: new Date().toISOString(),
+        confirmationType: "approve",
+      },
+    ];
+  }
 }
diff --git a/src/base/safewallet.ts b/src/base/safewallet.ts
index 242c157..f1457b3 100644
--- a/src/base/safewallet.ts
+++ b/src/base/safewallet.ts
@@ -2,6 +2,7 @@ import { Logger } from "@nestjs/common";
 import {
   MetaTransactionData,
   SafeTransaction,
+  SafeMultisigConfirmationResponse,
 } from "@safe-global/safe-core-sdk-types";
 import Safe, { buildSignatureBytes, EthSafeSignature } from "@safe-global/protocol-kit";
 import { ethers, Wallet, HDNodeWallet } from "ethers";
@@ -10,12 +11,20 @@ import { EthereumConnectedWallet } from "./wallet";
 
 export interface TransactionPropose {
   readyExecute: boolean;
-  signedTransaction: SafeTransaction;
+  safeTransaction: SafeTransaction;
+  signatures: string | null;
+}
+
+export interface SignatureInfo {
+  size: number;
+  signatures: string;
+  selfSigned: boolean;
 }
 
 export class SafeWallet {
   public address: string;
   public wallet: EthereumConnectedWallet;
+  public owners: string[];
   public threshold: number;
   private safeSdk: Safe;
   private safeService: SafeService;
@@ -41,9 +50,49 @@ export class SafeWallet {
       signer: this.wallet.privateKey,
       safeAddress: this.address,
     });
+    this.owners = (await this.safeSdk.getOwners()).map((o) => o.toLowerCase());
     this.threshold = await this.safeSdk.getThreshold();
   }
 
+  private concatSignatures(
+    confirmations: SafeMultisigConfirmationResponse[]
+  ): SignatureInfo {
+    // must sort by address
+    confirmations.sort(
+      (
+        left: SafeMultisigConfirmationResponse,
+        right: SafeMultisigConfirmationResponse
+      ) => {
+        const leftAddress = left.owner.toLowerCase();
+        const rightAddress = right.owner.toLowerCase();
+        if (leftAddress < rightAddress) {
+          return -1;
+        } else {
+          return 1;
+        }
+      }
+    );
+    var signatures = "0x";
+    const uniqueOwners = [];
+    for (const confirmation of confirmations) {
+      signatures += confirmation.signature.substring(2);
+      if (
+        uniqueOwners.includes(confirmation.owner.toLowerCase()) ||
+        !this.owners.includes(confirmation.owner.toLowerCase())
+      ) {
+        continue;
+      }
+      uniqueOwners.push(confirmation.owner.toLowerCase());
+    }
+    return {
+      size: uniqueOwners.length,
+      signatures: signatures,
+      selfSigned: uniqueOwners.includes(
+        this.wallet.wallet.address.toLowerCase()
+      ),
+    };
+  }
+
   async proposeTransaction(
     transactions: MetaTransactionData[],
     isExecuter: boolean,
@@ -52,42 +101,72 @@ export class SafeWallet {
     this.safeSdk ?? (await this.connect(chainId));
     const tx = await this.safeSdk.createTransaction({ transactions });
     const txHash = await this.safeSdk.getTransactionHash(tx);
+    let readyExecute: boolean = false;
 
     if (this.threshold === 1) {
       if (isExecuter) {
         const signedTransaction = await this.safeSdk.signTransaction(tx);
         return {
           readyExecute: true,
-          signedTransaction: signedTransaction,
+          safeTransaction: tx,
+          signatures: signedTransaction.encodedSignatures()
         };
       } else {
         return null;
       }
     } else {
-      const signedTransaction = await this.safeSdk.signTransaction(tx);
-      const readyExecute = signedTransaction.signatures.size >= this.threshold;
-      if (signedTransaction.signatures.size < this.threshold) {
-        try {
-          const senderSignature = await this.safeSdk.signHash(txHash)
-          await this.safeService.proposeTransaction({
-            safeAddress: this.address,
-            safeTransactionData: tx.data,
-            safeTxHash: txHash,
-            senderAddress: this.wallet.address,
-            senderSignature: senderSignature.data,
-          });
-          this.logger.log(
-            `finish to propose transaction ${txHash} using ${this.safeService.name} on chain ${chainId}`
-          );
-        } catch (err) {
-          this.logger.warn(
-            `propose transaction ${txHash} using ${this.safeService.name} on chain ${chainId} failed, err ${err}`
-          );
+      let confirmations: SafeMultisigConfirmationResponse[];
+      try {
+        confirmations = await this.safeService.getTransactionConfirmations(
+         txHash 
+        );
+      } catch {
+        confirmations = [];
+      }
+
+      var signatureInfo: SignatureInfo = this.concatSignatures(confirmations);
+      readyExecute = signatureInfo.size >= this.threshold;
+      if (signatureInfo.selfSigned) {
+        return {
+          readyExecute: readyExecute,
+          safeTransaction: tx,
+          signatures: signatureInfo.signatures,
+        };
+      } else {
+        if (signatureInfo.size < this.threshold) {
+          try {
+            const senderSignature = await this.safeSdk.signHash(txHash)
+            await this.safeService.proposeTransaction({
+              safeAddress: this.address,
+              safeTransactionData: tx.data,
+              safeTxHash: txHash,
+              senderAddress: this.wallet.address,
+              senderSignature: senderSignature.data,
+            });
+            signatureInfo.signatures += senderSignature.data.substring(2);
+            readyExecute = signatureInfo.size + 1 >= this.threshold;
+            this.logger.log(
+              `finish to propose transaction ${txHash} using ${this.safeService.name} on chain ${chainId}`
+            );
+          } catch (err) {
+            this.logger.warn(
+              `propose transaction ${txHash} using ${this.safeService.name} on chain ${chainId} failed, err ${err}`
+            );
+          }
+        }
+      }
+      if (!isExecuter) {
+        return {
+          readyExecute: false,
+          safeTransaction: tx,
+          signatures: signatureInfo.signatures
         }
       }
+      // isExecuter
       return {
         readyExecute: readyExecute,
-        signedTransaction: signedTransaction
+        safeTransaction: tx,
+        signatures: signatureInfo.signatures
       };
     }
   }
diff --git a/src/relayer/relayer.service.ts b/src/relayer/relayer.service.ts
index fc61f78..2708c8a 100644
--- a/src/relayer/relayer.service.ts
+++ b/src/relayer/relayer.service.ts
@@ -664,13 +664,13 @@ export class RelayerService implements OnModuleInit {
             relayer.safeWallet.address,
             relayer.safeWallet.wallet
           );
-          const safeTransactionData = txInfo.signedTransaction.data;
+          const safeTransaction = txInfo.safeTransaction.data;
           const err = await safeContract.tryExecTransaction(
-            safeTransactionData.to,
-            safeTransactionData.data,
+            safeTransaction.to,
+            safeTransaction.data,
             BigInt(0),
-            safeTransactionData.operation,
-            txInfo.signedTransaction.encodedSignatures()
+            safeTransaction.operation,
+            txInfo.signatures
           );
           if (err != null) {
             this.logger.warn(
@@ -681,11 +681,11 @@ export class RelayerService implements OnModuleInit {
             this.logger.log(`[${chain}] ready to ${hint} using safe tx`);
             const gasPrice = await this.gasPrice(chainInfo);
             const tx = await safeContract.execTransaction(
-              safeTransactionData.to,
-              safeTransactionData.data,
+              safeTransaction.to,
+              safeTransaction.data,
               BigInt(0),
-              safeTransactionData.operation,
-              txInfo.signedTransaction.encodedSignatures(),
+              safeTransaction.operation,
+              txInfo.signatures,
               gasPrice
             );
             await this.store.savePendingTransaction(
@@ -1160,13 +1160,13 @@ export class RelayerService implements OnModuleInit {
             bridge.toBridge.safeWallet.address,
             bridge.toBridge.safeWallet.wallet
           );
-          const safeTransactionData = txInfo.signedTransaction.data;
+          const safeTransaction = txInfo.safeTransaction.data;
           const err = await safeContract.tryExecTransaction(
-            safeTransactionData.to,
-            safeTransactionData.data,
-            BigInt(safeTransactionData.value),
-            safeTransactionData.operation,
-            txInfo.signedTransaction.encodedSignatures(),
+            safeTransaction.to,
+            safeTransaction.data,
+            BigInt(safeTransaction.value),
+            safeTransaction.operation,
+            txInfo.signatures,
             relayGasLimit
           );
           if (err != null) {
@@ -1185,11 +1185,11 @@ export class RelayerService implements OnModuleInit {
               )}, gasLimit: ${relayGasLimit}`
             );
             const tx = await safeContract.execTransaction(
-              safeTransactionData.to,
-              safeTransactionData.data,
-              BigInt(safeTransactionData.value),
-              safeTransactionData.operation,
-              txInfo.signedTransaction.encodedSignatures(),
+              safeTransaction.to,
+              safeTransaction.data,
+              BigInt(safeTransaction.value),
+              safeTransaction.operation,
+              txInfo.signatures,
               gasPrice,
               null,
               relayGasLimit