diff --git a/kernel/filesystem/devfs/devfs.c b/kernel/filesystem/devfs/devfs.c
index df2dea3f..6abf905e 100644
--- a/kernel/filesystem/devfs/devfs.c
+++ b/kernel/filesystem/devfs/devfs.c
@@ -85,7 +85,8 @@ static long devfs_readdir(struct vfs_file_t *file_ptr, void *dirent, vfs_filldir
     ++file_ptr->position;
     // 获取目标dentry（由于是子目录项，因此是child_node_list）
     struct vfs_dir_entry_t *target_dent = container_of(list, struct vfs_dir_entry_t, child_node_list);
-    kdebug("target name=%s, namelen=%d", target_dent->name, target_dent->name_length);
+    // kdebug("target name=%s, namelen=%d", target_dent->name, target_dent->name_length);
+    
     char *name = (char *)kzalloc(target_dent->name_length + 1, 0);
     strncpy(name, target_dent->name, target_dent->name_length);
     uint32_t dentry_type;
diff --git a/user/apps/shell/cmd.c b/user/apps/shell/cmd.c
index 53152cc1..94689b49 100644
--- a/user/apps/shell/cmd.c
+++ b/user/apps/shell/cmd.c
@@ -210,7 +210,7 @@ int shell_cmd_cd(int argc, char **argv)
             new_path[current_dir_len] = '/';
         strcat(new_path, argv[1] + dest_offset);
         int x = chdir(new_path);
-        printf("chdir: retval=%d\n",x);
+        
         if (x == 0) // 成功切换目录
         {
             free(shell_current_path);