diff --git a/btc/rpcclient.go b/btc/rpcclient.go
index 5129b64..eed423d 100644
--- a/btc/rpcclient.go
+++ b/btc/rpcclient.go
@@ -13,7 +13,7 @@ type BtcClient struct {
 }
 
 func NewBtcClient(URL string, user string, pass string, chainId int) (*BtcClient, error) {
-	chainCfg, err := wallet.GetBtcChainParams(chainId)
+	chainParams, err := wallet.GetBtcChainParams(chainId)
 	if err != nil {
 		return nil, err
 	}
@@ -21,7 +21,7 @@ func NewBtcClient(URL string, user string, pass string, chainId int) (*BtcClient
 	connCfg := &rpcclient.ConnConfig{
 		User:   user,
 		Pass:   pass,
-		Params: chainCfg.Name,
+		Params: chainParams.Name,
 	}
 
 	u, err := url.Parse(URL)
diff --git a/btc/util.go b/btc/util.go
index 4040b3c..98ca2cd 100644
--- a/btc/util.go
+++ b/btc/util.go
@@ -9,8 +9,8 @@ import (
 	"github.com/btcsuite/btcwallet/wallet/txsizes"
 )
 
-func DecodeAddress(addr string, chainCfg *chaincfg.Params) (btcutil.Address, error) {
-	return btcutil.DecodeAddress(addr, chainCfg)
+func DecodeAddress(addr string, chainParams *chaincfg.Params) (btcutil.Address, error) {
+	return btcutil.DecodeAddress(addr, chainParams)
 }
 
 func HexToHash(s string) (*chainhash.Hash, error) {
diff --git a/eth/transact.go b/eth/transact.go
index cff42b6..01be6ab 100644
--- a/eth/transact.go
+++ b/eth/transact.go
@@ -66,7 +66,7 @@ func (this *TransactBaseParam) GetGasPrice() *big.Int {
 
 func SignTx(w *wallet.EthWallet, tx *types.Transaction) (*types.Transaction, error) {
 	signer := types.LatestSigner(w.ChainParams())
-	signedTx, err := types.SignTx(tx, signer, w.DeriveEthPrivateKey())
+	signedTx, err := types.SignTx(tx, signer, w.DeriveNativePrivateKey())
 	if err != nil {
 		return nil, err
 	}
diff --git a/qa/btc/transact_test.go b/qa/btc/transact_test.go
index 402d257..0a4b049 100644
--- a/qa/btc/transact_test.go
+++ b/qa/btc/transact_test.go
@@ -37,16 +37,16 @@ func TestTransaction(t *testing.T) {
 	w3, err := hdw.NewNativeSegWitWallet(0, 0, 1)
 	rq.Nil(err)
 
-	chainCfg, _ := wallet.GetBtcChainParams(btcChainId)
+	chainParams, _ := wallet.GetBtcChainParams(btcChainId)
 	a0 := w0.DeriveAddress()
 	a1 := w1.DeriveAddress()
 	a2 := w2.DeriveAddress()
 	a3 := w3.DeriveAddress()
 	fmt.Printf("a0: %s\na1: %s\na2: %s\na3: %s\n", a0, a1, a2, a3)
-	addrA0, _ := btc.DecodeAddress(a0, chainCfg)
-	addrA1, _ := btc.DecodeAddress(a1, chainCfg)
-	addrA2, _ := btc.DecodeAddress(a2, chainCfg)
-	addrA3, _ := btc.DecodeAddress(a3, chainCfg)
+	addrA0, _ := btc.DecodeAddress(a0, chainParams)
+	addrA1, _ := btc.DecodeAddress(a1, chainParams)
+	addrA2, _ := btc.DecodeAddress(a2, chainParams)
+	addrA3, _ := btc.DecodeAddress(a3, chainParams)
 
 	{
 		for _, ad := range []string{a0, a1, a2, a3} {
@@ -87,7 +87,7 @@ func TestTransaction(t *testing.T) {
 		out3 := btc.BtcOutput{Address: addrA3, Amount: btc.BtcToSatoshi(transferAmount)}
 
 		tx, err = btc.NewBtcTransaction([]btc.BtcUnspent{unspent}, []btc.BtcOutput{out1, out2, out3},
-			addrA0, feePerKb, chainCfg)
+			addrA0, feePerKb, chainParams)
 		rq.Nil(err)
 	}
 
diff --git a/qa/eth/transact_test.go b/qa/eth/transact_test.go
index d32f51e..9e34ca2 100644
--- a/qa/eth/transact_test.go
+++ b/qa/eth/transact_test.go
@@ -31,7 +31,6 @@ func TestTransaction(t *testing.T) {
 	w1, err := hdw.NewWallet(wallet.SymbolEth, 0, 0, 1)
 	rq.Nil(err)
 
-	//chainCfg, _ := wallet.GetBtcChainParams(btcChainId)
 	a0 := w0.DeriveAddress()
 	a1 := w1.DeriveAddress()
 	fmt.Printf("a0: %s\na1: %s\n", a0, a1)
diff --git a/wallet/wallet_btc.go b/wallet/wallet_btc.go
index 3eef689..2da5755 100644
--- a/wallet/wallet_btc.go
+++ b/wallet/wallet_btc.go
@@ -75,7 +75,28 @@ func (w *BtcWallet) Symbol() string {
 	return w.symbol
 }
 
-func (w *BtcWallet) DeriveBtcAddress() btcutil.Address {
+func (w *BtcWallet) DeriveAddress() string {
+	addr := w.DeriveNativeAddress()
+	if addr != nil {
+		return addr.EncodeAddress()
+	}
+	return ""
+}
+
+func (w *BtcWallet) DerivePublicKey() string {
+	return hex.EncodeToString(w.publicKey.SerializeCompressed())
+}
+
+func (w *BtcWallet) DerivePrivateKey() string {
+	wif, err := btcutil.NewWIF(w.privateKey, w.chainParams, true)
+	if err != nil {
+		log.Println("DerivePrivateKey error:", err)
+		return ""
+	}
+	return wif.String()
+}
+
+func (w *BtcWallet) DeriveNativeAddress() btcutil.Address {
 	switch w.segWitType {
 	case SegWitNone:
 		pk := w.publicKey.SerializeCompressed()
@@ -113,28 +134,7 @@ func (w *BtcWallet) DeriveBtcAddress() btcutil.Address {
 	return nil
 }
 
-func (w *BtcWallet) DeriveAddress() string {
-	addr := w.DeriveBtcAddress()
-	if addr != nil {
-		return addr.EncodeAddress()
-	}
-	return ""
-}
-
-func (w *BtcWallet) DerivePublicKey() string {
-	return hex.EncodeToString(w.publicKey.SerializeCompressed())
-}
-
-func (w *BtcWallet) DerivePrivateKey() string {
-	wif, err := btcutil.NewWIF(w.privateKey, w.chainParams, true)
-	if err != nil {
-		log.Println("DerivePrivateKey error:", err)
-		return ""
-	}
-	return wif.String()
-}
-
-func (w *BtcWallet) DeriveBtcPrivateKey() *btcec.PrivateKey {
+func (w *BtcWallet) DeriveNativePrivateKey() *btcec.PrivateKey {
 	return w.privateKey
 }
 
diff --git a/wallet/wallet_eth.go b/wallet/wallet_eth.go
index a546984..f3b2a01 100644
--- a/wallet/wallet_eth.go
+++ b/wallet/wallet_eth.go
@@ -30,7 +30,7 @@ func NewEthWallet(privateKey string, chainId int) (*EthWallet, error) {
 		return nil, err
 	}
 
-	publicKey, err := derivePublicKey(privKey)
+	publicKey, err := DerivePublicKey(privKey)
 	if err != nil {
 		return nil, err
 	}
@@ -57,7 +57,7 @@ func NewEthWalletByPath(path string, seed []byte, chainId int) (*EthWallet, erro
 	}
 	privateKey := privKey.ToECDSA()
 
-	publicKey, err := derivePublicKey(privateKey)
+	publicKey, err := DerivePublicKey(privateKey)
 	if err != nil {
 		return nil, err
 	}
@@ -79,10 +79,6 @@ func (w *EthWallet) Symbol() string {
 	return w.symbol
 }
 
-func (w *EthWallet) DeriveEthAddress() common.Address {
-	return crypto.PubkeyToAddress(*w.publicKey)
-}
-
 func (w *EthWallet) DeriveAddress() string {
 	return crypto.PubkeyToAddress(*w.publicKey).Hex()
 }
@@ -95,11 +91,15 @@ func (w *EthWallet) DerivePrivateKey() string {
 	return hex.EncodeToString(crypto.FromECDSA(w.privateKey))
 }
 
-func (w *EthWallet) DeriveEthPrivateKey() *ecdsa.PrivateKey {
+func (w *EthWallet) DeriveNativeAddress() common.Address {
+	return crypto.PubkeyToAddress(*w.publicKey)
+}
+
+func (w *EthWallet) DeriveNativePrivateKey() *ecdsa.PrivateKey {
 	return w.privateKey
 }
 
-func derivePublicKey(privateKey *ecdsa.PrivateKey) (*ecdsa.PublicKey, error) {
+func DerivePublicKey(privateKey *ecdsa.PrivateKey) (*ecdsa.PublicKey, error) {
 	publicKey := privateKey.Public()
 	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
 	if !ok {
diff --git a/wallet/wallet_trx.go b/wallet/wallet_trx.go
index 4bf915b..8f44c42 100644
--- a/wallet/wallet_trx.go
+++ b/wallet/wallet_trx.go
@@ -21,7 +21,7 @@ func NewTrxWallet(privateKey string) (*TrxWallet, error) {
 		return nil, err
 	}
 
-	publicKey, err := derivePublicKey(privKey)
+	publicKey, err := DerivePublicKey(privKey)
 	if err != nil {
 		return nil, err
 	}
@@ -42,7 +42,7 @@ func NewTrxWalletByPath(path string, seed []byte) (*TrxWallet, error) {
 	}
 	privateKey := privKey.ToECDSA()
 
-	publicKey, err := derivePublicKey(privateKey)
+	publicKey, err := DerivePublicKey(privateKey)
 	if err != nil {
 		return nil, err
 	}