diff --git a/g/errors/gerror/gerror.go b/g/errors/gerror/gerror.go
index 99f52fad2..b667dab04 100644
--- a/g/errors/gerror/gerror.go
+++ b/g/errors/gerror/gerror.go
@@ -9,9 +9,18 @@ package gerror
 
 import (
 	"fmt"
+
 	"github.com/gogf/gf/g/util/gconv"
 )
 
+type ApiStack interface {
+	Stack() string
+}
+
+type ApiCause interface {
+	Cause() error
+}
+
 // New returns an error that formats as the given value.
 func New(value interface{}) error {
 	if value == nil {
@@ -61,7 +70,7 @@ func Wrapf(err error, format string, args ...interface{}) error {
 // Cause returns the root cause error.
 func Cause(err error) error {
 	if err != nil {
-		if e, ok := err.(*Error); ok {
+		if e, ok := err.(ApiCause); ok {
 			return e.Cause()
 		}
 	}
@@ -74,7 +83,7 @@ func Stack(err error) string {
 	if err == nil {
 		return ""
 	}
-	if e, ok := err.(*Error); !ok {
+	if e, ok := err.(ApiStack); ok {
 		return e.Stack()
 	}
 	return ""
diff --git a/g/util/gvalid/gvalid_unit_checkstruct_test.go b/g/util/gvalid/gvalid_unit_checkstruct_test.go
index a02fc555b..6c4b68754 100755
--- a/g/util/gvalid/gvalid_unit_checkstruct_test.go
+++ b/g/util/gvalid/gvalid_unit_checkstruct_test.go
@@ -237,7 +237,7 @@ func Test_CheckStruct_With_Inherit(t *testing.T) {
 			Pass Pass
 		}
 		user := &User{
-			Name: "john",
+			Name: "",
 			Pass: Pass{
 				Pass1: "1",
 				Pass2: "2",
diff --git a/geg/errors/gerror/gerror2.go b/geg/errors/gerror/gerror2.go
index a210d5fef..abb512302 100644
--- a/geg/errors/gerror/gerror2.go
+++ b/geg/errors/gerror/gerror2.go
@@ -1,7 +1,7 @@
 package main
 
 import (
-	"github.com/gogf/gf/g/os/glog"
+	"fmt"
 
 	"github.com/gogf/gf/g/errors/gerror"
 )
@@ -19,8 +19,8 @@ func ReadConfig() error {
 }
 
 func main() {
-	err := ReadConfig()
-	glog.Printf("%s\n%+s", err, err)
-	glog.Printf("%+v", err)
-	glog.Error(err)
+	//err := ReadConfig()
+	//glog.Printf("%s\n%+s", err, err)
+	//glog.Printf("%+v", err)
+	fmt.Printf("%+v", ReadConfig())
 }
diff --git a/geg/errors/gerror/gerror3.go b/geg/errors/gerror/gerror3.go
new file mode 100644
index 000000000..d587ec016
--- /dev/null
+++ b/geg/errors/gerror/gerror3.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/gogf/gf/g/errors/gerror"
+)
+
+func Error1() error {
+	return errors.New("test")
+}
+
+func Error2() error {
+	return gerror.New("test")
+}
+
+func main() {
+	err1 := Error1()
+	err2 := Error2()
+	fmt.Println("err1:\n", gerror.Stack(err1))
+	fmt.Println("err2:\n", gerror.Stack(err2))
+}