diff --git a/protocol/goai/goai_path.go b/protocol/goai/goai_path.go
index 62f29f142..51d837360 100644
--- a/protocol/goai/goai_path.go
+++ b/protocol/goai/goai_path.go
@@ -34,9 +34,6 @@ type Path struct {
 	Parameters  Parameters `json:"parameters,omitempty"  yaml:"parameters,omitempty"`
 }
 
-// Paths are specified by OpenAPI/Swagger standard version 3.0.
-type Paths map[string]Path
-
 const (
 	responseOkKey = `200`
 )
@@ -49,10 +46,6 @@ type addPathInput struct {
 }
 
 func (oai *OpenApiV3) addPath(in addPathInput) error {
-	if oai.Paths == nil {
-		oai.Paths = map[string]Path{}
-	}
-
 	var (
 		reflectType = reflect.TypeOf(in.Function)
 	)
@@ -106,8 +99,8 @@ func (oai *OpenApiV3) addPath(in addPathInput) error {
 		)
 	}
 
-	if v, ok := oai.Paths[in.Path]; ok {
-		path = v
+	if v := oai.Paths.Get(in.Path); v != nil {
+		path = *v
 	}
 
 	// Method check.
@@ -280,7 +273,7 @@ func (oai *OpenApiV3) addPath(in addPathInput) error {
 	default:
 		return gerror.NewCodef(gcode.CodeInvalidParameter, `invalid method "%s"`, in.Method)
 	}
-	oai.Paths[in.Path] = path
+	oai.Paths.Set(in.Path, path)
 	return nil
 }
 
diff --git a/protocol/goai/goai_paths.go b/protocol/goai/goai_paths.go
new file mode 100644
index 000000000..63b71fa34
--- /dev/null
+++ b/protocol/goai/goai_paths.go
@@ -0,0 +1,52 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package goai
+
+import (
+	"github.com/gogf/gf/v2/container/gmap"
+)
+
+// Paths are specified by OpenAPI/Swagger standard version 3.0.
+type Paths struct {
+	paths *gmap.ListMap // map[string]Path
+}
+
+func (p *Paths) init() {
+	if p.paths == nil {
+		p.paths = gmap.NewListMap()
+	}
+}
+
+func (p *Paths) Get(name string) *Path {
+	p.init()
+	value := p.paths.Get(name)
+	if value != nil {
+		path := value.(Path)
+		return &path
+	}
+	return nil
+}
+
+func (p *Paths) Set(name string, path Path) {
+	p.init()
+	p.paths.Set(name, path)
+}
+
+func (p *Paths) Map() map[string]Path {
+	p.init()
+	m := make(map[string]Path)
+	p.paths.Iterator(func(key, value interface{}) bool {
+		m[key.(string)] = value.(Path)
+		return true
+	})
+	return m
+}
+
+func (p Paths) MarshalJSON() ([]byte, error) {
+	p.init()
+	return p.paths.MarshalJSON()
+}
diff --git a/protocol/goai/goai_shemas.go b/protocol/goai/goai_shemas.go
index c25b8ce00..47fa348fa 100644
--- a/protocol/goai/goai_shemas.go
+++ b/protocol/goai/goai_shemas.go
@@ -11,7 +11,7 @@ import (
 )
 
 type Schemas struct {
-	refs *gmap.ListMap
+	refs *gmap.ListMap // map[string]SchemaRef
 }
 
 func createSchemas() Schemas {
@@ -26,7 +26,7 @@ func (s *Schemas) init() {
 	}
 }
 
-func (s Schemas) Get(name string) *SchemaRef {
+func (s *Schemas) Get(name string) *SchemaRef {
 	s.init()
 	value := s.refs.Get(name)
 	if value != nil {
@@ -36,12 +36,12 @@ func (s Schemas) Get(name string) *SchemaRef {
 	return nil
 }
 
-func (s Schemas) Set(name string, ref SchemaRef) {
+func (s *Schemas) Set(name string, ref SchemaRef) {
 	s.init()
 	s.refs.Set(name, ref)
 }
 
-func (s Schemas) Map() map[string]SchemaRef {
+func (s *Schemas) Map() map[string]SchemaRef {
 	s.init()
 	m := make(map[string]SchemaRef)
 	s.refs.Iterator(func(key, value interface{}) bool {
@@ -51,7 +51,7 @@ func (s Schemas) Map() map[string]SchemaRef {
 	return m
 }
 
-func (s Schemas) Iterator(f func(key string, ref SchemaRef) bool) {
+func (s *Schemas) Iterator(f func(key string, ref SchemaRef) bool) {
 	s.init()
 	s.refs.Iterator(func(key, value interface{}) bool {
 		return f(key.(string), value.(SchemaRef))
diff --git a/protocol/goai/goai_z_unit_test.go b/protocol/goai/goai_z_unit_test.go
index f18a77761..7b4b5986a 100644
--- a/protocol/goai/goai_z_unit_test.go
+++ b/protocol/goai/goai_z_unit_test.go
@@ -118,13 +118,13 @@ func TestOpenApiV3_Add(t *testing.T) {
 		t.Assert(oai.Components.Schemas.Get(`github.com.gogf.gf.v2.protocol.goai_test.SetSpecInfo`).Value.Properties.Get(`Params`).Value.Type, goai.TypeArray)
 
 		// Paths.
-		t.Assert(len(oai.Paths), 1)
-		t.AssertNE(oai.Paths[`/test1/{appId}`].Put, nil)
-		t.Assert(len(oai.Paths[`/test1/{appId}`].Put.Tags), 1)
-		t.Assert(len(oai.Paths[`/test1/{appId}`].Put.Parameters), 2)
-		t.AssertNE(oai.Paths[`/test1/{appId}`].Post, nil)
-		t.Assert(len(oai.Paths[`/test1/{appId}`].Post.Tags), 1)
-		t.Assert(len(oai.Paths[`/test1/{appId}`].Post.Parameters), 2)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.AssertNE(oai.Paths.Map()[`/test1/{appId}`].Put, nil)
+		t.Assert(len(oai.Paths.Map()[`/test1/{appId}`].Put.Tags), 1)
+		t.Assert(len(oai.Paths.Map()[`/test1/{appId}`].Put.Parameters), 2)
+		t.AssertNE(oai.Paths.Map()[`/test1/{appId}`].Post, nil)
+		t.Assert(len(oai.Paths.Map()[`/test1/{appId}`].Post.Tags), 1)
+		t.Assert(len(oai.Paths.Map()[`/test1/{appId}`].Post.Parameters), 2)
 	})
 }
 
@@ -223,15 +223,15 @@ func TestOpenApiV3_Add_AutoDetectIn(t *testing.T) {
 		fmt.Println(oai.String())
 
 		t.Assert(len(oai.Components.Schemas.Map()), 2)
-		t.Assert(len(oai.Paths), 1)
-		t.AssertNE(oai.Paths[path].Get, nil)
-		t.Assert(len(oai.Paths[path].Get.Parameters), 3)
-		t.Assert(oai.Paths[path].Get.Parameters[0].Value.Name, `Name`)
-		t.Assert(oai.Paths[path].Get.Parameters[0].Value.In, goai.ParameterInPath)
-		t.Assert(oai.Paths[path].Get.Parameters[1].Value.Name, `Product`)
-		t.Assert(oai.Paths[path].Get.Parameters[1].Value.In, goai.ParameterInPath)
-		t.Assert(oai.Paths[path].Get.Parameters[2].Value.Name, `Region`)
-		t.Assert(oai.Paths[path].Get.Parameters[2].Value.In, goai.ParameterInQuery)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.AssertNE(oai.Paths.Map()[path].Get, nil)
+		t.Assert(len(oai.Paths.Map()[path].Get.Parameters), 3)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[0].Value.Name, `Name`)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[0].Value.In, goai.ParameterInPath)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[1].Value.Name, `Product`)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[1].Value.In, goai.ParameterInPath)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[2].Value.Name, `Region`)
+		t.Assert(oai.Paths.Map()[path].Get.Parameters[2].Value.In, goai.ParameterInQuery)
 	})
 }
 
@@ -275,8 +275,8 @@ func TestOpenApiV3_CommonRequest(t *testing.T) {
 		t.AssertNil(err)
 		// Schema asserts.
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
 	})
 }
 
@@ -320,8 +320,8 @@ func TestOpenApiV3_CommonRequest_WithoutDataField_Setting(t *testing.T) {
 		// Schema asserts.
 		// fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 5)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 5)
 	})
 }
 
@@ -360,8 +360,8 @@ func TestOpenApiV3_CommonRequest_EmptyRequest(t *testing.T) {
 		// Schema asserts.
 		// fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
 	})
 }
 
@@ -415,9 +415,9 @@ func TestOpenApiV3_CommonRequest_SubDataField(t *testing.T) {
 		// Schema asserts.
 		// fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 4)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 1)
-		t.Assert(len(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Get(`Request`).Value.Properties.Map()), 4)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Value.Properties.Get(`Request`).Value.Properties.Map()), 4)
 	})
 }
 
@@ -460,13 +460,13 @@ func TestOpenApiV3_CommonResponse(t *testing.T) {
 		})
 		t.AssertNil(err)
 
-		//g.Dump(oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map())
+		//g.Dump(oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map())
 		// Schema asserts.
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
 		t.Assert(
-			oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Get("data").Value.Description,
+			oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Get("data").Value.Description,
 			`Result data for certain request according API definition`,
 		)
 	})
@@ -512,8 +512,8 @@ func TestOpenApiV3_CommonResponse_WithoutDataField_Setting(t *testing.T) {
 		// Schema asserts.
 		fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 8)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 8)
 	})
 }
 
@@ -552,9 +552,9 @@ func TestOpenApiV3_CommonResponse_EmptyResponse(t *testing.T) {
 		// Schema asserts.
 		// fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(oai.Paths["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Ref, `github.com.gogf.gf.v2.protocol.goai_test.Req`)
-		t.Assert(len(oai.Paths["/index"].Put.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(oai.Paths.Map()["/index"].Put.RequestBody.Value.Content["application/json"].Schema.Ref, `github.com.gogf.gf.v2.protocol.goai_test.Req`)
+		t.Assert(len(oai.Paths.Map()["/index"].Put.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 3)
 	})
 }
 
@@ -608,9 +608,9 @@ func TestOpenApiV3_CommonResponse_SubDataField(t *testing.T) {
 		// Schema asserts.
 		// fmt.Println(oai.String())
 		t.Assert(len(oai.Components.Schemas.Map()), 4)
-		t.Assert(len(oai.Paths), 1)
-		t.Assert(len(oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 1)
-		t.Assert(len(oai.Paths["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Get(`Response`).Value.Properties.Map()), 7)
+		t.Assert(len(oai.Paths.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Map()), 1)
+		t.Assert(len(oai.Paths.Map()["/index"].Get.Responses["200"].Value.Content["application/json"].Schema.Value.Properties.Get(`Response`).Value.Properties.Map()), 7)
 	})
 }
 
@@ -664,7 +664,7 @@ func TestOpenApiV3_ShortTags(t *testing.T) {
 		// fmt.Println(oai.String())
 		// Schema asserts.
 		t.Assert(len(oai.Components.Schemas.Map()), 3)
-		t.Assert(oai.Paths[`/test1/{appId}`].Summary, `CreateResourceReq sum`)
+		t.Assert(oai.Paths.Map()[`/test1/{appId}`].Summary, `CreateResourceReq sum`)
 		t.Assert(oai.
 			Components.
 			Schemas.Get(`github.com.gogf.gf.v2.protocol.goai_test.CreateResourceReq`).