diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/planning_policy_v2.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/planning_policy_v2.rs
index 4f2f497f8..51e23278e 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/planning_policy_v2.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/planning_policy_v2.rs
@@ -222,7 +222,7 @@ pub(crate) fn planning_v2_function_tools() -> Vec<platform_llm::LlmFunctionTool>
                     "gdd": {
                         "type": "object",
                         "additionalProperties": false,
-                        "description": "立项方案全文",
+                        "description": "完整 GDD，按字段填全，不要增删或改名",
                         "properties": {
                             "game": {
                                 "type": "object",