diff --git a/zrpc/client.go b/zrpc/client.go
index a3820f4d..e8cd14c1 100644
--- a/zrpc/client.go
+++ b/zrpc/client.go
@@ -4,7 +4,6 @@ import (
 	"log"
 	"time"
 
-	"github.com/tal-tech/go-zero/core/discov"
 	"github.com/tal-tech/go-zero/zrpc/internal"
 	"github.com/tal-tech/go-zero/zrpc/internal/auth"
 	"google.golang.org/grpc"
@@ -79,18 +78,6 @@ func NewClient(c RpcClientConf, options ...ClientOption) (Client, error) {
 	}, nil
 }
 
-// NewClientNoAuth returns a Client without authentication.
-func NewClientNoAuth(c discov.EtcdConf, opts ...ClientOption) (Client, error) {
-	client, err := internal.NewClient(internal.BuildDiscovTarget(c.Hosts, c.Key), opts...)
-	if err != nil {
-		return nil, err
-	}
-
-	return &RpcClient{
-		client: client,
-	}, nil
-}
-
 // NewClientWithTarget returns a Client with connecting to given target.
 func NewClientWithTarget(target string, opts ...ClientOption) (Client, error) {
 	return internal.NewClient(target, opts...)
diff --git a/zrpc/client_test.go b/zrpc/client_test.go
index ba715826..d9b05bb4 100644
--- a/zrpc/client_test.go
+++ b/zrpc/client_test.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/discov"
 	"github.com/tal-tech/go-zero/core/logx"
 	"github.com/tal-tech/go-zero/zrpc/internal/mock"
 	"google.golang.org/grpc"
@@ -82,6 +83,20 @@ func TestDepositServer_Deposit(t *testing.T) {
 			return invoker(ctx, method, req, reply, cc, opts...)
 		}),
 	)
+	tarConfClient := MustNewClient(
+		RpcClientConf{
+			Target:  "foo",
+			App:     "foo",
+			Token:   "bar",
+			Timeout: 1000,
+		},
+		WithDialOption(grpc.WithInsecure()),
+		WithDialOption(grpc.WithContextDialer(dialer())),
+		WithUnaryClientInterceptor(func(ctx context.Context, method string, req, reply interface{},
+			cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+			return invoker(ctx, method, req, reply, cc, opts...)
+		}),
+	)
 	targetClient, err := NewClientWithTarget("foo", WithDialOption(grpc.WithInsecure()),
 		WithDialOption(grpc.WithContextDialer(dialer())), WithUnaryClientInterceptor(
 			func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn,
@@ -91,11 +106,15 @@ func TestDepositServer_Deposit(t *testing.T) {
 	assert.Nil(t, err)
 	clients := []Client{
 		directClient,
+		tarConfClient,
 		targetClient,
 	}
 	for _, tt := range tests {
+		tt := tt
 		for _, client := range clients {
+			client := client
 			t.Run(tt.name, func(t *testing.T) {
+				t.Parallel()
 				cli := mock.NewDepositServiceClient(client.Conn())
 				request := &mock.DepositRequest{Amount: tt.amount}
 				response, err := cli.Deposit(context.Background(), request)
@@ -119,3 +138,39 @@ func TestDepositServer_Deposit(t *testing.T) {
 		}
 	}
 }
+
+func TestNewClientWithError(t *testing.T) {
+	_, err := NewClient(
+		RpcClientConf{
+			App:     "foo",
+			Token:   "bar",
+			Timeout: 1000,
+		},
+		WithDialOption(grpc.WithInsecure()),
+		WithDialOption(grpc.WithContextDialer(dialer())),
+		WithUnaryClientInterceptor(func(ctx context.Context, method string, req, reply interface{},
+			cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+			return invoker(ctx, method, req, reply, cc, opts...)
+		}),
+	)
+	assert.NotNil(t, err)
+
+	_, err = NewClient(
+		RpcClientConf{
+			Etcd: discov.EtcdConf{
+				Hosts: []string{"localhost:2379"},
+				Key:   "mock",
+			},
+			App:     "foo",
+			Token:   "bar",
+			Timeout: 1,
+		},
+		WithDialOption(grpc.WithInsecure()),
+		WithDialOption(grpc.WithContextDialer(dialer())),
+		WithUnaryClientInterceptor(func(ctx context.Context, method string, req, reply interface{},
+			cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+			return invoker(ctx, method, req, reply, cc, opts...)
+		}),
+	)
+	assert.NotNil(t, err)
+}