diff --git a/src/main/java/irita/sdk/model/BaseTx.java b/src/main/java/irita/sdk/model/BaseTx.java
index 0116b88..46824b3 100644
--- a/src/main/java/irita/sdk/model/BaseTx.java
+++ b/src/main/java/irita/sdk/model/BaseTx.java
@@ -11,6 +11,8 @@ public class BaseTx {
     private Fee fee;
     private String memo;
     private BroadcastMode mode;
+    private long accountNumber;
+    private long sequence;
 
     public BaseTx() {
     }
@@ -21,6 +23,14 @@ public BaseTx(int gas, Fee fee, BroadcastMode mode) {
         this.mode = mode;
     }
 
+    public BaseTx(int gas, Fee fee, BroadcastMode mode, long accountNumber, long sequence) {
+        this.gas = gas;
+        this.fee = fee;
+        this.mode = mode;
+        this.accountNumber = accountNumber;
+        this.sequence = sequence;
+    }
+
     public BaseTx(String from, String password, int gas, Fee fee, String memo, BroadcastMode mode) {
         this.from = from;
         this.password = password;
@@ -30,6 +40,17 @@ public BaseTx(String from, String password, int gas, Fee fee, String memo, Broad
         this.mode = mode;
     }
 
+    public BaseTx(String from, String password, int gas, Fee fee, String memo, BroadcastMode mode, long accountNumber, long sequence) {
+        this.from = from;
+        this.password = password;
+        this.gas = gas;
+        this.fee = fee;
+        this.memo = memo;
+        this.mode = mode;
+        this.accountNumber = accountNumber;
+        this.sequence = sequence;
+    }
+
     public String getFrom() {
         return StringUtils.isNotEmpty(from) ? from : Constant.DEFAULT_USER_NAME;
     }
@@ -81,4 +102,22 @@ public BaseTx setMode(BroadcastMode mode) {
         this.mode = mode;
         return this;
     }
+
+    public long getAccountNumber() {
+        return accountNumber;
+    }
+
+    public BaseTx setAccountNumber(long accountNumber) {
+        this.accountNumber = accountNumber;
+        return this;
+    }
+
+    public long getSequence() {
+        return sequence;
+    }
+
+    public BaseTx setSequence(long sequence) {
+        this.sequence = sequence;
+        return this;
+    }
 }
diff --git a/src/main/java/irita/sdk/tx/Secp256k1TxEngine.java b/src/main/java/irita/sdk/tx/Secp256k1TxEngine.java
index 950a9ea..f96d354 100644
--- a/src/main/java/irita/sdk/tx/Secp256k1TxEngine.java
+++ b/src/main/java/irita/sdk/tx/Secp256k1TxEngine.java
@@ -58,19 +58,22 @@ public TxOuterClass.Tx signTx(TxOuterClass.TxBody txBody, BaseTx baseTx, Account
         ECPoint publicKey = keyInfo.getPublicKey();
         byte[] publicKeyEncoded = publicKey.getEncoded(true);
 
+        long sequence = baseTx.getSequence() != 0 ? baseTx.getSequence() : account.getSequence();
+        long accountNumber = baseTx.getAccountNumber() != 0 ? baseTx.getAccountNumber() : account.getAccountNumber();
+
         TxOuterClass.AuthInfo ai = TxOuterClass.AuthInfo.newBuilder()
                 .addSignerInfos(
                         TxOuterClass.SignerInfo.newBuilder()
                                 .setPublicKey(Any.pack(Keys.PubKey.newBuilder().setKey(ByteString.copyFrom(publicKeyEncoded)).build(), "/"))
                                 .setModeInfo(TxOuterClass.ModeInfo.newBuilder().setSingle(TxOuterClass.ModeInfo.Single.newBuilder().setMode(Signing.SignMode.SIGN_MODE_DIRECT)))
-                                .setSequence(account.getSequence()))
+                                .setSequence(sequence))
                 .setFee(TxOuterClass.Fee.newBuilder().setGasLimit(baseTx.getGas()).addAmount(CoinOuterClass.Coin.newBuilder().setAmount(baseTx.getFee().getAmount()).setDenom(baseTx.getFee().getDenom()))).build();
 
 
         TxOuterClass.SignDoc signDoc = TxOuterClass.SignDoc.newBuilder()
                 .setBodyBytes(txBody.toByteString())
                 .setAuthInfoBytes(ai.toByteString())
-                .setAccountNumber(account.getAccountNumber())
+                .setAccountNumber(accountNumber)
                 .setChainId(chainID)
                 .build();
 
diff --git a/src/main/java/irita/sdk/tx/Sm2TxEngine.java b/src/main/java/irita/sdk/tx/Sm2TxEngine.java
index ffb7306..895ba77 100644
--- a/src/main/java/irita/sdk/tx/Sm2TxEngine.java
+++ b/src/main/java/irita/sdk/tx/Sm2TxEngine.java
@@ -62,19 +62,22 @@ public TxOuterClass.Tx signTx(TxOuterClass.TxBody txBody, BaseTx baseTx, Account
         ECPoint publicKey = keyInfo.getPublicKey();
         byte[] publicKeyEncoded = publicKey.getEncoded(true);
 
+        long sequence = baseTx.getSequence() != 0 ? baseTx.getSequence() : account.getSequence();
+        long accountNumber = baseTx.getAccountNumber() != 0 ? baseTx.getAccountNumber() : account.getAccountNumber();
+
         TxOuterClass.AuthInfo ai = TxOuterClass.AuthInfo.newBuilder()
                 .addSignerInfos(
                         TxOuterClass.SignerInfo.newBuilder()
                                 .setPublicKey(Any.pack(Keys.PubKey.newBuilder().setKey(ByteString.copyFrom(publicKeyEncoded)).build(), "/"))
                                 .setModeInfo(TxOuterClass.ModeInfo.newBuilder().setSingle(TxOuterClass.ModeInfo.Single.newBuilder().setMode(Signing.SignMode.SIGN_MODE_DIRECT)))
-                                .setSequence(account.getSequence()))
+                                .setSequence(sequence))
                 .setFee(TxOuterClass.Fee.newBuilder().setGasLimit(baseTx.getGas()).addAmount(CoinOuterClass.Coin.newBuilder().setAmount(baseTx.getFee().getAmount()).setDenom(baseTx.getFee().getDenom()))).build();
 
 
         TxOuterClass.SignDoc signDoc = TxOuterClass.SignDoc.newBuilder()
                 .setBodyBytes(txBody.toByteString())
                 .setAuthInfoBytes(ai.toByteString())
-                .setAccountNumber(account.getAccountNumber())
+                .setAccountNumber(accountNumber)
                 .setChainId(chainID)
                 .build();