diff --git a/.dockerignore b/.dockerignore
index 7dfbc79..1edccf1 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -72,6 +72,9 @@ frontend/build/
 # 后端静态文件（会从前端构建阶段复制）
 backend/static/
 
+# 提示词工坊实例标识（每个容器需要独立生成）
+backend/.instance_id
+
 # Docker相关
 Dockerfile
 .dockerignore
diff --git a/.gitignore b/.gitignore
index 689519a..223e389 100644
--- a/.gitignore
+++ b/.gitignore
@@ -120,4 +120,7 @@ data_old/
 backend/migrate_all_databases.py
 test_api.py
 # Embedding models (downloaded from HuggingFace at runtime)
-backend/embedding/
\ No newline at end of file
+backend/embedding/
+
+# 提示词工坊实例标识（每个部署实例必须唯一）
+backend/.instance_id
\ No newline at end of file
diff --git a/backend/.instance_id b/backend/.instance_id
deleted file mode 100644
index 9300b34..0000000
--- a/backend/.instance_id
+++ /dev/null
@@ -1 +0,0 @@
-eaf3cae6-4a6
\ No newline at end of file