diff --git a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/recognition.rs b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/recognition.rs
index 039679e31..c2f21bfe1 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/recognition.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/recognition.rs
@@ -1,8 +1,8 @@
 use crate::config::build_game_creator_llm_client_from_llm_config;
 use crate::config::load_game_creator_app_config;
 use crate::ui_editor::commands::utils::{
-    read_ui_reference_image_data_url, request_ui_editor_llm, required_tool_arguments,
-    strict_json_schema,
+    parse_limited_llm_tool_arguments, read_ui_reference_image_data_url, request_ui_editor_llm,
+    required_tool_call_arguments, strict_json_schema,
 };
 use crate::ui_editor::component::{Component, NodeComponent};
 use crate::ui_editor::layout::children_display_mode::ChildrenDisplayMode;
@@ -770,14 +770,24 @@ pub(crate) async fn recognize_ui_impl_with_provider(
             !response.text.trim().is_empty(),
             response.tool_calls.len()
         );
-        let arguments =
-            required_tool_arguments(&response, "recognize_ui_structure").map_err(|error| {
+        let arguments = required_tool_call_arguments(&response, "recognize_ui_structure")
+            .map_err(|error| {
                 app_log!(
-                    "ui_recognition.error stage=parse_arguments root={} error={error}",
+                    "ui_recognition.error stage=parse_tool_call reason=missing_tool_call root={} error={error}",
                     root_id.as_str()
                 );
-                format!("根界面图 {} 的识别工具参数无效：{error}", root_id.as_str())
+                format!(
+                    "LLM 未返回 recognize_ui_structure 工具调用（根界面图 {}）",
+                    root_id.as_str()
+                )
             })?;
+        let arguments = parse_limited_llm_tool_arguments(arguments).map_err(|error| {
+            app_log!(
+                "ui_recognition.error stage=parse_arguments root={} error={error}",
+                root_id.as_str()
+            );
+            format!("根界面图 {} 的识别工具参数无效：{error}", root_id.as_str())
+        })?;
         validate_recognition_response_shape(&arguments).map_err(|error| {
             app_log!(
                 "ui_recognition.error stage=validate_arguments root={} error={error}",