diff --git a/shell/preload/sitecustomize.js b/shell/preload/sitecustomize.js
index ec8704f2..b8883681 100644
--- a/shell/preload/sitecustomize.js
+++ b/shell/preload/sitecustomize.js
@@ -43,7 +43,7 @@ function run() {
 
     // Export NODE_OPTIONS so task_before can use it for any node commands
     const nodeOptionsForBash = file_preload_js
-      ? `-r ${file_preload_js} ${PREV_NODE_OPTIONS || ''}`
+      ? ['-r', file_preload_js, PREV_NODE_OPTIONS].filter(Boolean).join(' ')
       : PREV_NODE_OPTIONS || '';
 
     const commands = [
diff --git a/shell/preload/sitecustomize.py b/shell/preload/sitecustomize.py
index 864a9026..2a4ad3d5 100644
--- a/shell/preload/sitecustomize.py
+++ b/shell/preload/sitecustomize.py
@@ -52,7 +52,7 @@ def run():
         temp_file = f"/tmp/env_{os.getpid()}.json"
         
         # Export PYTHONPATH so task_before can use it for any python commands
-        pythonpath_for_bash = f"{dir_preload}:{dir_config}:{prev_pythonpath}" if dir_preload else prev_pythonpath
+        pythonpath_for_bash = ':'.join(filter(None, [dir_preload, dir_config, prev_pythonpath]))
         
         # 构建命令数组
         commands = [