diff --git a/xcli_core/cli_code_exec.py b/xcli_core/cli_code_exec.py
index e916a16..b418186 100644
--- a/xcli_core/cli_code_exec.py
+++ b/xcli_core/cli_code_exec.py
@@ -10,14 +10,9 @@ from colorama import Fore, Style
 from .config import logger
 from .sandbox import (
     _sandbox_checker, _make_sandbox_worker, _sandbox_work_dir,
-    _HAS_RESOURCE, _SAFE_WHITELIST,
+    _HAS_RESOURCE, _SAFE_WHITELIST, _resource_mod,
 )
 
-try:
-    import resource as _resource_mod
-except ImportError:
-    _resource_mod = None
-
 
 class CodeExecMixin:
     """代码沙箱执行相关方法"""
diff --git a/xcli_core/sandbox.py b/xcli_core/sandbox.py
index 043e751..0669d44 100644
--- a/xcli_core/sandbox.py
+++ b/xcli_core/sandbox.py
@@ -4,9 +4,13 @@ import ast as _ast
 import re
 import textwrap as _textwrap
 import tempfile as _tempfile
-import resource as _resource_mod
 
-_HAS_RESOURCE = hasattr(_resource_mod, 'setrlimit')
+try:
+    import resource as _resource_mod
+    _HAS_RESOURCE = hasattr(_resource_mod, 'setrlimit')
+except ImportError:
+    _resource_mod = None
+    _HAS_RESOURCE = False
 
 _BLOCKED_MODULES = frozenset({
     'os', 'sys', 'subprocess', 'shutil', 'socket', 'pickle',