diff --git a/opengemini/client.go b/opengemini/client.go
index e6fe79d..c4d43ff 100644
--- a/opengemini/client.go
+++ b/opengemini/client.go
@@ -1 +1,71 @@
 package opengemini
+
+import (
+	"crypto/tls"
+	"errors"
+)
+
+type Options = func(client *Client) error
+
+type Config struct {
+	Addresses   []*Address
+	AuthConfig  *AuthConfig
+	BatchConfig *BatchConfig
+	GzipEnable  bool
+	TlsConfig   *tls.Config
+}
+
+type Client struct {
+	addresses   []*Address
+	authConfig  *AuthConfig
+	batchConfig *BatchConfig
+	gzipEnable  bool
+	tlsConfig   *tls.Config
+}
+
+func NewClient(c *Config) (*Client, error) {
+	if len(c.Addresses) == 0 {
+		return nil, errors.New("must have at least one address")
+	}
+	if c.AuthConfig.AuthType == Token && len(c.AuthConfig.Token) == 0 {
+		return nil, errors.New("invalid auth config cause empty token")
+	}
+	if c.AuthConfig.AuthType == Password && (len(c.AuthConfig.UserName) == 0 || len(c.AuthConfig.Password) == 0) {
+		return nil, errors.New("invalid auth config cause empty username or password")
+	}
+	if c.BatchConfig.BatchEnable && (c.BatchConfig.BatchInterval <= 0 || c.BatchConfig.BatchSize <= 0) {
+		return nil, errors.New("batch interval and batch size must be more than 0 ,if batch operate enable")
+	}
+	return &Client{
+		addresses:   c.Addresses,
+		authConfig:  c.AuthConfig,
+		batchConfig: c.BatchConfig,
+		gzipEnable:  c.GzipEnable,
+		tlsConfig:   c.TlsConfig,
+	}, nil
+}
+
+type Address struct {
+	Host string
+	Port int
+}
+
+type AuthType int
+
+const (
+	Password AuthType = iota
+	Token
+)
+
+type AuthConfig struct {
+	AuthType AuthType
+	UserName string
+	Password string
+	Token    string
+}
+
+type BatchConfig struct {
+	BatchEnable   bool
+	BatchInterval int
+	BatchSize     int
+}
diff --git a/opengemini/client_test.go b/opengemini/client_test.go
new file mode 100644
index 0000000..205254f
--- /dev/null
+++ b/opengemini/client_test.go
@@ -0,0 +1,93 @@
+package opengemini
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+)
+
+func TestNewClient(t *testing.T) {
+	tests := map[string]struct {
+		config *Config
+		client *Client
+		err    error
+	}{
+		"EmptyAddress": {
+			config: &Config{},
+			client: nil,
+			err:    errors.New("must have at least one address"),
+		},
+		"EmptyToken": {
+			config: &Config{
+				Addresses: []*Address{{Host: "127.0.0.1", Port: 8086}},
+				AuthConfig: &AuthConfig{
+					AuthType: Token,
+				},
+			},
+			client: nil,
+			err:    errors.New("invalid auth config cause empty token"),
+		},
+		"EmptyPassword": {
+			config: &Config{
+				Addresses: []*Address{{Host: "127.0.0.1", Port: 8086}},
+				AuthConfig: &AuthConfig{
+					AuthType: Password,
+				},
+			},
+			client: nil,
+			err:    errors.New("invalid auth config cause empty username or password"),
+		},
+		"InvalidBatchConfig": {
+			config: &Config{
+				Addresses: []*Address{{Host: "127.0.0.1", Port: 8086}},
+				AuthConfig: &AuthConfig{
+					AuthType: Password,
+					UserName: "TestUser",
+					Password: "TestPassword",
+				},
+				BatchConfig: &BatchConfig{
+					BatchEnable:   true,
+					BatchSize:     10,
+					BatchInterval: -1,
+				},
+			},
+			client: nil,
+			err:    errors.New("batch interval and batch size must be more than 0 ,if batch operate enable"),
+		},
+		"NewClientSuccess": {
+			config: &Config{
+				Addresses: []*Address{{Host: "127.0.0.1", Port: 8086}},
+				AuthConfig: &AuthConfig{
+					AuthType: Password,
+					UserName: "TestUser",
+					Password: "TestPassword",
+				},
+				BatchConfig: &BatchConfig{
+					BatchEnable:   true,
+					BatchSize:     10,
+					BatchInterval: 1,
+				},
+			},
+			client: &Client{
+				addresses: []*Address{{Host: "127.0.0.1", Port: 8086}},
+				authConfig: &AuthConfig{
+					AuthType: Password,
+					UserName: "TestUser",
+					Password: "TestPassword",
+				},
+				batchConfig: &BatchConfig{
+					BatchEnable:   true,
+					BatchSize:     10,
+					BatchInterval: 1,
+				},
+			},
+		},
+	}
+	for caseName, tt := range tests {
+		c, err := NewClient(tt.config)
+		if !reflect.DeepEqual(c, tt.client) || !reflect.DeepEqual(tt.err, err) {
+			t.Logf("case @%s not pass test", caseName)
+		}
+	}
+
+}