diff --git a/components/system/source/shell/sh.c b/components/system/source/shell/sh.c
index 230ead6..602fc86 100755
--- a/components/system/source/shell/sh.c
+++ b/components/system/source/shell/sh.c
@@ -317,29 +317,23 @@ static int _register_cmd_check_fn(sh_t *sh_hdl, const sh_cmd_reg_t *sh_reg, char
 
         if (strlen(cmd->cmd) >= CONFIG_SH_MAX_CMD_LEN)
         {
-            if (sh_hdl && sh_hdl->disable_echo == 0)
-            {
-                SYS_LOG_WRN("cmd: Command length exceeds the maximum limit!\r\n"
-                            "Defined in file: %s:%d\r\n"
-                            "Command: '%s'",
-                            _FILENAME(sh_reg->file),
-                            sh_reg->line,
-                            cmd->cmd);
-            }
+            SYS_LOG_WRN("cmd: Command length exceeds the maximum limit!\r\n"
+                        "Defined in file: %s:%d\r\n"
+                        "Command: '%s'",
+                        _FILENAME(sh_reg->file),
+                        sh_reg->line,
+                        cmd->cmd);
             return -1;
         }
 
         if (strchr(cmd->cmd, ' '))
         {
-            if (sh_hdl && sh_hdl->disable_echo == 0)
-            {
-                SYS_LOG_WRN("cmd: Command cannot contain spaces!\r\n"
-                            "Defined in file: %s:%d\r\n"
-                            "Command: '%s'",
-                            _FILENAME(sh_reg->file),
-                            sh_reg->line,
-                            cmd->cmd);
-            }
+            SYS_LOG_WRN("cmd: Command cannot contain spaces!\r\n"
+                        "Defined in file: %s:%d\r\n"
+                        "Command: '%s'",
+                        _FILENAME(sh_reg->file),
+                        sh_reg->line,
+                        cmd->cmd);
             return -1;
         }
 
diff --git a/components/system/source/shell/sh.h b/components/system/source/shell/sh.h
index 69e9515..1857175 100755
--- a/components/system/source/shell/sh.h
+++ b/components/system/source/shell/sh.h
@@ -32,7 +32,7 @@
 #endif
 
 #ifndef CONFIG_SH_MAX_CMD_LEN
-#define CONFIG_SH_MAX_CMD_LEN ((CONFIG_SH_MAX_PARAM / 10) > 10 ? (CONFIG_SH_MAX_PARAM / 10) : 10) /* 最大单个命令长度（包含结束符 '\0' ） */
+#define CONFIG_SH_MAX_CMD_LEN ((CONFIG_SH_MAX_LINE_LEN / 10) > 10 ? (CONFIG_SH_MAX_LINE_LEN / 10) : 10) /* 最大单个命令长度（包含结束符 '\0' ） */
 #endif
 
 typedef struct sh_obj_def sh_t;
@@ -102,7 +102,7 @@ typedef struct sh_cmd
 
 typedef struct
 {
-    sys_psnode_t *reg_node; // 注意时设置的节点
+    sys_psnode_t *reg_node; // 注册节点
     const sh_cmd_t *cmd;    // 命令数据
     const char *file;       // 文件
     int line;               // 行号