diff --git a/g/database/gdb/gdb_type_value.go b/g/database/gdb/gdb_type_value.go
index e2481b89e..226701b44 100644
--- a/g/database/gdb/gdb_type_value.go
+++ b/g/database/gdb/gdb_type_value.go
@@ -11,6 +11,7 @@ import (
     "gitee.com/johng/gf/g/util/gconv"
 )
 
+func (v Value) IsNil()          bool            { return v == nil }
 func (v Value) Bytes()          []byte          { return []byte(v) }
 func (v Value) String()         string          { return string(v.Bytes()) }
 func (v Value) Bool()           bool            { return gconv.Bool(v.Bytes()) }
diff --git a/geg/util/gvalid/gvalid_struct3.go b/geg/util/gvalid/gvalid_struct3.go
index de8b65b52..7ac19f36c 100644
--- a/geg/util/gvalid/gvalid_struct3.go
+++ b/geg/util/gvalid/gvalid_struct3.go
@@ -10,12 +10,12 @@ import (
 func main() {
     type User struct {
         Password        string `gvalid:"password@password"`
-        ConfiemPassword string `gvalid:"confirm_password@password|same:password#|密码与确认密码不一致"`
+        ConfirmPassword string `gvalid:"confirm_password@password|same:password#|密码与确认密码不一致"`
     }
 
     user := &User{
         Password        : "123456",
-        ConfiemPassword : "",
+        ConfirmPassword : "",
     }
 
     gutil.Dump(gvalid.CheckStruct(user, nil))