diff --git a/docs/doc_config.md b/docs/doc_config.md
index cb779cb..61937bf 100644
--- a/docs/doc_config.md
+++ b/docs/doc_config.md
@@ -13,11 +13,15 @@ Config doc.
 |test3.[].[2]|string|true|||
 |C.[]|any|true|||
 
-## Test1
+## ext.Hook
+Hook hook config.
 
 | Key      | Type      | Require | Default           | Describe          |
 |----------|----------|-----|------------------|--------------|
-|a|string|true|||
+|name|string|false|example|hook name.|
+|commands.[]|string|true||command list.|
+|envs.{string}|string|true||env key map.|
+|mode|[Mode](#ext.Mode)|true|1|run mode.|
 
 ## ext.Hook
 Hook hook config.
@@ -29,9 +33,13 @@ Hook hook config.
 |envs.{string}|string|true||env key map.|
 |mode|[Mode](#ext.Mode)|true|1|run mode.|
 
+## Test1
+| Key      | Type      | Require | Default           | Describe          |
+|----------|----------|-----|------------------|--------------|
+|a|string|true|||
+
 ## ext.Mode
 **Type:** int
-
 Mode mode define.
 
 | Enum Value      | Describe          |
@@ -39,8 +47,15 @@ Mode mode define.
 |1|mode q.|
 |2|mode a.|
 
+## ext.Mode
+**Type:** int
+Mode mode define.
+
+| Enum Value      | Describe          |
+|----------|--------------|
+|1|mode q.|
+|2|mode a.|
 
 ---
 **github.com/eleztian/type2md/test.Config**
 GENERATED BY THE COMMAND [type2md](https://github.com/eleztian/type2md)
-
diff --git a/struct_info.go b/struct_info.go
index bf0c0d5..0cedd83 100644
--- a/struct_info.go
+++ b/struct_info.go
@@ -1,6 +1,7 @@
 package main
 
 type StructInfo struct {
+	Name     string      `json:"name"`
 	Describe string      `json:"describe"`
 	Fields   []FieldInfo `json:"fields"`
 	Enums    *EnumInfo   `json:"enums"`
diff --git a/struct_markdown.go b/struct_markdown.go
index 84382c5..5a46149 100644
--- a/struct_markdown.go
+++ b/struct_markdown.go
@@ -18,9 +18,13 @@ func (mk *Markdown) Generate(data map[string]StructInfo) []byte {
 
 	buf.WriteString("# " + mk.Title + "\n")
 
+	types := make([]string, 0)
+	tpMap := make(map[string]struct{})
 	genStruct := func(structInfo StructInfo) {
-		buf.WriteString(structInfo.Describe)
-		buf.WriteString("\n")
+		if len(structInfo.Describe) != 0 {
+			buf.WriteString(structInfo.Describe)
+			buf.WriteString("\n")
+		}
 
 		buf.WriteString(
 			"| Key      | Type      | Require | Default           | Describe          |\n" +
@@ -31,6 +35,10 @@ func (mk *Markdown) Generate(data map[string]StructInfo) []byte {
 			buf.WriteString("|")
 			if item.Reference != "" {
 				buf.WriteString(fmt.Sprintf("[%s](#%s)", item.Type, mk.ObjTitleFunc(item.Reference, item.Type)))
+				key := genKey(item.Reference, item.Type)
+				if _, ok := tpMap[key]; !ok {
+					types = append(types, key)
+				}
 			} else {
 				buf.WriteString(item.Type)
 			}
@@ -61,9 +69,11 @@ func (mk *Markdown) Generate(data map[string]StructInfo) []byte {
 	}
 
 	genEnums := func(enums *EnumInfo, desc string) {
-		buf.WriteString(fmt.Sprintf("**Type:** %s\n\n", enums.Type))
-		buf.WriteString(desc)
-		buf.WriteString("\n")
+		buf.WriteString(fmt.Sprintf("**Type:** %s\n", enums.Type))
+		if len(desc) != 0 {
+			buf.WriteString(desc)
+			buf.WriteString("\n")
+		}
 
 		if len(enums.Names) != 0 {
 			buf.WriteString("| Enum Value      | Describe          |\n")
@@ -84,32 +94,50 @@ func (mk *Markdown) Generate(data map[string]StructInfo) []byte {
 		delete(data, mk.MainStructName)
 	}
 
-	for name, structInfo := range data {
-		var (
-			modPath  string
-			typeName string
-		)
-		lastIdx := strings.LastIndex(name, ".")
-		if lastIdx < 0 {
-			typeName = name
-		} else {
-			typeName = name[lastIdx+1:]
-			modPath = name[:lastIdx]
+	for idx := 0; idx < len(types); idx++ {
+		name := types[idx]
+		structInfo, ok := data[name]
+		if !ok {
+			continue
 		}
+		modPath, typeName := parseKey(name)
 
+		buf.WriteString(fmt.Sprintf("\n## %s\n", mk.ObjTitleFunc(modPath, typeName)))
 		if structInfo.Enums != nil {
-			buf.WriteString(fmt.Sprintf("\n## %s\n", mk.ObjTitleFunc(modPath, typeName)))
 			genEnums(structInfo.Enums, structInfo.Describe)
 		} else {
-			buf.WriteString(fmt.Sprintf("\n## %s\n", mk.ObjTitleFunc(modPath, typeName)))
 			genStruct(structInfo)
 		}
 	}
 
-	buf.WriteString(fmt.Sprintf("\n\n---\n"+
+	buf.WriteString(fmt.Sprintf("\n---\n"+
 		"**%s**\n"+
-		"GENERATED BY THE COMMAND [type2md](https://github.com/eleztian/type2md)\n\n",
+		"GENERATED BY THE COMMAND [type2md](https://github.com/eleztian/type2md)\n",
 		mk.MainStructName))
 
 	return buf.Bytes()
 }
+
+func parseKey(name string) (string, string) {
+	var (
+		modPath  string
+		typeName string
+	)
+	lastIdx := strings.LastIndex(name, ".")
+	if lastIdx < 0 {
+		typeName = name
+	} else {
+		typeName = name[lastIdx+1:]
+		modPath = name[:lastIdx]
+	}
+
+	return modPath, typeName
+}
+
+func genKey(modPath, typeName string) string {
+	if modPath == "" {
+		return typeName
+	}
+
+	return modPath + "." + typeName
+}