diff --git a/astrbot/core/sandbox/tools/shell.py b/astrbot/core/sandbox/tools/shell.py
index 8d46f6973..88c1a25a5 100644
--- a/astrbot/core/sandbox/tools/shell.py
+++ b/astrbot/core/sandbox/tools/shell.py
@@ -19,7 +19,7 @@ class ExecuteShellTool(FunctionTool):
             "properties": {
                 "command": {
                     "type": "string",
-                    "description": "The shell command to execute.",
+                    "description": "The bash command to execute. Equal to 'cd {working_dir} && {your_command}'.",
                 },
                 "background": {
                     "type": "boolean",