diff --git a/intelligence_finance_v1/errors.go b/intelligence_finance_v1/errors.go
new file mode 100644
index 0000000..934543e
--- /dev/null
+++ b/intelligence_finance_v1/errors.go
@@ -0,0 +1,59 @@
+package intelligence_finance_v1
+
+import "fmt"
+
+// SDKError SDK通用错误类型
+type SDKError struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+	Err     error  `json:"-"`
+}
+
+// Error 实现error接口
+func (e *SDKError) Error() string {
+	if e.Err != nil {
+		return fmt.Sprintf("code=%d, message=%s, err=%v", e.Code, e.Message, e.Err)
+	}
+	return fmt.Sprintf("code=%d, message=%s", e.Code, e.Message)
+}
+
+// Unwrap 返回包装的错误
+func (e *SDKError) Unwrap() error {
+	return e.Err
+}
+
+// NewSDKError 创建SDK错误
+func NewSDKError(code int, message string, err error) *SDKError {
+	return &SDKError{
+		Code:    code,
+		Message: message,
+		Err:     err,
+	}
+}
+
+// 预定义错误码
+const (
+	ErrCodeSuccess          = 0
+	ErrCodeUnknown          = -1
+	ErrCodeInvalidParam     = 1001
+	ErrCodeSignatureFailed  = 1002
+	ErrCodeNetworkError     = 1003
+	ErrCodeRequestTimeout   = 1004
+	ErrCodeServerError      = 2001
+	ErrCodeUnauthorized     = 2002
+	ErrCodeNotFound         = 2003
+	ErrCodeRateLimit        = 2004
+)
+
+// 预定义错误
+var (
+	ErrUnknown         = NewSDKError(ErrCodeUnknown, "未知错误", nil)
+	ErrInvalidParam    = NewSDKError(ErrCodeInvalidParam, "参数无效", nil)
+	ErrSignatureFailed = NewSDKError(ErrCodeSignatureFailed, "签名失败", nil)
+	ErrNetworkError    = NewSDKError(ErrCodeNetworkError, "网络错误", nil)
+	ErrRequestTimeout  = NewSDKError(ErrCodeRequestTimeout, "请求超时", nil)
+	ErrServerError     = NewSDKError(ErrCodeServerError, "服务端错误", nil)
+	ErrUnauthorized    = NewSDKError(ErrCodeUnauthorized, "未授权", nil)
+	ErrNotFound        = NewSDKError(ErrCodeNotFound, "未找到", nil)
+	ErrRateLimit       = NewSDKError(ErrCodeRateLimit, "请求频率限制", nil)
+)
\ No newline at end of file