diff --git a/annotation.go b/annotation.go
index e01c75f..79bb52e 100644
--- a/annotation.go
+++ b/annotation.go
@@ -10,6 +10,8 @@ const (
 	NameTag     = "@name"
 	DefaultTag  = "@default"
 	RequiredTag = "@required"
+
+	MethodAnnotationPrefix = "_"
 )
 
 var (
diff --git a/registry.go b/registry.go
index 39cfa9a..ca549c3 100644
--- a/registry.go
+++ b/registry.go
@@ -212,7 +212,11 @@ LOOP:
 				if 0 == len(td.methodAnnotation) {
 					td.methodAnnotation = make(map[string]map[reflect.Type]Annotation, 0)
 				}
-				td.methodAnnotation[f.Name] = as
+				_name := strings.TrimLeft(f.Name, MethodAnnotationPrefix)
+				if "" == _name {
+					return nil, fmt.Errorf("name[%s] of method annotation is not valid", _name)
+				}
+				td.methodAnnotation[_name] = as
 				continue LOOP
 			} else {
 				as, err := r.getAnnotation(&f)