diff --git a/container/gvar/gvar_z_example_test.go b/container/gvar/gvar_z_example_test.go
index f8ed1b929..8532ef25b 100644
--- a/container/gvar/gvar_z_example_test.go
+++ b/container/gvar/gvar_z_example_test.go
@@ -18,10 +18,10 @@ import (
 // New
 func ExampleVarNew() {
 	v := gvar.New(400)
-	g.Dump(v)
+	fmt.Println(v)
 
 	// Output:
-	// "400"
+	// 400
 }
 
 // Clone
diff --git a/internal/utils/utils_reflect.go b/internal/utils/utils_reflect.go
index 2bd28b066..6897fa8dd 100644
--- a/internal/utils/utils_reflect.go
+++ b/internal/utils/utils_reflect.go
@@ -83,6 +83,8 @@ func ReflectValueToInterface(v reflect.Value) (value interface{}, ok bool) {
 		return v.String(), true
 	case reflect.Ptr:
 		return ReflectValueToInterface(v.Elem())
+	case reflect.Interface:
+		return ReflectValueToInterface(v.Elem())
 	default:
 		return nil, false
 	}
diff --git a/util/gutil/gutil_dump.go b/util/gutil/gutil_dump.go
index 2e8b6a76c..53c8aeda5 100644
--- a/util/gutil/gutil_dump.go
+++ b/util/gutil/gutil_dump.go
@@ -169,6 +169,9 @@ func doDump(value interface{}, indent string, buffer *bytes.Buffer, option doDum
 			buffer.WriteString(fmt.Sprintf(`<%s>`, reflectTypeName))
 		}
 
+	case reflect.Interface:
+		doDump(exportInternalInput.ReflectValue.Elem(), indent, buffer, option)
+
 	default:
 		doDumpDefault(exportInternalInput)
 	}
@@ -283,7 +286,17 @@ func doDumpStruct(in doDumpInternalInput) {
 		Pointer:         in.Value,
 		RecursiveOption: gstructs.RecursiveOptionEmbedded,
 	})
-	if len(structFields) == 0 {
+	var (
+		hasNoExportedFields = true
+		_, isReflectValue   = in.Value.(reflect.Value)
+	)
+	for _, field := range structFields {
+		if field.IsExported() {
+			hasNoExportedFields = false
+			break
+		}
+	}
+	if !isReflectValue && (len(structFields) == 0 || hasNoExportedFields) {
 		var (
 			structContentStr  = ""
 			attributeCountStr = "0"
@@ -295,6 +308,11 @@ func doDumpStruct(in doDumpInternalInput) {
 		} else if v, ok := in.Value.(iMarshalJSON); ok {
 			b, _ := v.MarshalJSON()
 			structContentStr = string(b)
+		} else {
+			// Has no common interface implements.
+			if len(structFields) != 0 {
+				goto dumpStructFields
+			}
 		}
 		if structContentStr == "" {
 			structContentStr = "{}"
@@ -314,6 +332,8 @@ func doDumpStruct(in doDumpInternalInput) {
 		}
 		return
 	}
+
+dumpStructFields:
 	var (
 		maxSpaceNum = 0
 		tmpSpaceNum = 0
diff --git a/util/gutil/gutil_z_unit_dump_test.go b/util/gutil/gutil_z_unit_dump_test.go
index 0d0d68637..336e74fb4 100755
--- a/util/gutil/gutil_z_unit_dump_test.go
+++ b/util/gutil/gutil_z_unit_dump_test.go
@@ -10,6 +10,7 @@ import (
 	"bytes"
 	"testing"
 
+	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/net/ghttp"
 	"github.com/gogf/gf/v2/os/gtime"
 	"github.com/gogf/gf/v2/test/gtest"
@@ -72,6 +73,23 @@ func Test_Dump(t *testing.T) {
 	})
 }
 
+func Test_Dump_Map(t *testing.T) {
+	gtest.C(t, func(t *gtest.T) {
+		buffer := bytes.NewBuffer(nil)
+		m := g.Map{
+			"k1": g.Map{
+				"k2": "v2",
+			},
+		}
+		gutil.DumpTo(buffer, m, gutil.DumpOption{})
+		t.Assert(buffer.String(), `{
+    "k1": {
+        "k2": "v2",
+    },
+}`)
+	})
+}
+
 func TestDumpWithType(t *testing.T) {
 	type CommonReq struct {
 		AppId      int64  `json:"appId" v:"required" in:"path" des:"应用Id" sum:"应用Id Summary"`