diff --git a/grconfig.go b/grconfig.go
index 091dfcb..da479ff 100644
--- a/grconfig.go
+++ b/grconfig.go
@@ -85,11 +85,9 @@ func recursiveParse(item string, v interface{}) interface{} {
 	if item == "" {
 		return v
 	}
-
 	chunks := strings.SplitN(item, ".", 2)
 
 	if n, err := strconv.Atoi(chunks[0]); err == nil {
-
 		if tmp, ok := v.([]interface{}); reflect.TypeOf(v).Kind() == reflect.Slice && ok {
 			v = tmp[n]
 		}
diff --git a/grconfig_test.go b/grconfig_test.go
index 5d172ba..173e11b 100644
--- a/grconfig_test.go
+++ b/grconfig_test.go
@@ -36,4 +36,8 @@ func TestNew(t *testing.T) {
 	var s string
 	gr.Item("db.default.host", &s)
 	fmt.Println("item形式解释符串:", s)
+
+	// 根解释字符串
+	fmt.Println("根解释字符串", gr.String("db"))
+	fmt.Println("二级解释字符串", gr.String("db.default"))
 }
diff --git a/yaml.go b/yaml.go
index 1db79b9..0a4e2fc 100644
--- a/yaml.go
+++ b/yaml.go
@@ -16,10 +16,21 @@ type ConfigerChannelYAML struct {
 
 func (conf *ConfigerChannelYAML) String(item string) string {
 	chunks := strings.SplitN(item, ".", 2)
-	target := recursiveParse(chunks[1], conf.tmp)
+	var target interface{}
+	if len(chunks) > 1 {
+		target = recursiveParse(chunks[1], conf.tmp)
+	} else {
+		target = conf.tmp
+	}
+
 	if str, ok := target.(string); ok {
 		return str
+	} else {
+		if out, err := yaml.Marshal(target); err == nil {
+			return bytes.NewBuffer(out).String()
+		}
 	}
+
 	return ""
 }