diff --git a/slimapi/slimapi_name_resolver.go b/slimapi/slimapi_name_resolver.go
index f17d0fa..d0814b2 100644
--- a/slimapi/slimapi_name_resolver.go
+++ b/slimapi/slimapi_name_resolver.go
@@ -72,6 +72,9 @@ func (d *slimApiNameResolver) FillMethod(state *webapi.ApiState) {
 
 		case webapi.ContentTypeForm:
 			requestFormat = meta_RequestFormat_Post
+
+		case webapi.ContentTypeMultipartForm:
+			requestFormat = meta_RequestFormat_Post
 		}
 	} else {
 		// 指定的 format 串还可包含多段使用逗号隔开的值（ e.g. json,plain ）， plain 是对应回执的，需单独处理。
diff --git a/slimapi/slimapi_name_resolver_test.go b/slimapi/slimapi_name_resolver_test.go
index 05bfb8e..12b7e9d 100644
--- a/slimapi/slimapi_name_resolver_test.go
+++ b/slimapi/slimapi_name_resolver_test.go
@@ -125,6 +125,14 @@ func Test_slimApiNameResolver_FillMethod(t *testing.T) {
 		callback:            "",
 	})
 
+	// Content-Type 分号后的部分被忽略。
+	testOne("?~method=name&multi=1", webapi.ContentTypeMultipartForm+"; boundary=----123", want{
+		name:                "name",
+		requestFormat:       meta_RequestFormat_Post,
+		responseContentType: webapi.ContentTypeJson,
+		callback:            "",
+	})
+
 	// Content-Type 分后后的部分被忽略。
 	testOne("?~method=name&with_charset=1", webapi.ContentTypeForm+"; charset=utf8", want{
 		name:                "name",