diff --git a/MSOS_ESP/main/CMakeLists.txt b/MSOS_ESP/main/CMakeLists.txt
index 408786f..e1ff33b 100644
--- a/MSOS_ESP/main/CMakeLists.txt
+++ b/MSOS_ESP/main/CMakeLists.txt
@@ -1,3 +1,3 @@
-idf_component_register(SRCS "hello_world_main.c" "iic.c" "oled.c" "state.c" "tca9535.c"
+idf_component_register(SRCS "hello_world_main.c" "iic.c" "oled.c" "state.c" "tca9535.c" "moonshineOS_core/cli.c"
                        PRIV_REQUIRES spi_flash esp_driver_i2c log
-                       INCLUDE_DIRS ".")
+                       INCLUDE_DIRS "." "moonshineOS_core")
diff --git a/MSOS_ESP/main/hello_world_main.c b/MSOS_ESP/main/hello_world_main.c
index 7f17933..8f8872c 100644
--- a/MSOS_ESP/main/hello_world_main.c
+++ b/MSOS_ESP/main/hello_world_main.c
@@ -17,6 +17,7 @@
 #include "oled.h"
 #include "state.h"
 #include "tca9535.h"
+#include "cli.h"
 
 void app_main(void)
 {
@@ -51,7 +52,8 @@ void app_main(void)
     iic_init();
     tca9535_init();
     oled_init();
-
+    cli_init();
+    //cli_run();
     while(1){
         vTaskDelay(1000 / portTICK_PERIOD_MS);
     }
diff --git a/MSOS_ESP/main/moonshineOS_core/cli.c b/MSOS_ESP/main/moonshineOS_core/cli.c
new file mode 100644
index 0000000..a7e0e68
--- /dev/null
+++ b/MSOS_ESP/main/moonshineOS_core/cli.c
@@ -0,0 +1,115 @@
+#include "cli.h"
+#include <stdio.h>
+#include <string.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "iic.h"
+
+#define CLI_LINE_MAX  256
+#define CLI_MAX_ARGS  16
+
+typedef int (*cli_cmd_func_t)(int argc, char **argv);
+
+typedef struct {
+    const char *name;
+    const char *help;
+    cli_cmd_func_t func;
+} cli_cmd_t;
+
+static int cli_cmd_help(int argc, char **argv);
+static int cli_cmd_iic(int argc, char **argv);
+
+static const cli_cmd_t s_cmds[] = {
+    {"help", "help                  显示所有可用命令", cli_cmd_help},
+    {"iic",  "iic scan              扫描I2C总线设备",  cli_cmd_iic},
+};
+static const int s_cmd_count = sizeof(s_cmds) / sizeof(s_cmds[0]);
+
+static int cli_cmd_help(int argc, char **argv)
+{
+    printf("可用命令:\n");
+    for (int i = 0; i < s_cmd_count; i++) {
+        printf("  %s\n", s_cmds[i].help);
+    }
+    return 0;
+}
+
+static int cli_cmd_iic(int argc, char **argv)
+{
+    if (argc < 2) {
+        printf("用法: iic <scan>\n");
+        return 1;
+    }
+    if (strcmp(argv[1], "scan") == 0) {
+        iic_scan();
+    } else {
+        printf("未知子命令: %s\n用法: iic <scan>\n", argv[1]);
+        return 1;
+    }
+    return 0;
+}
+
+static int read_line(char *buf, int maxlen)
+{
+    int i = 0;
+    while (i < maxlen - 1) {
+        int c = getchar();
+        if (c < 0) {
+            vTaskDelay(1);
+            continue;
+        }
+        if (c == '\r' || c == '\n') {
+            putchar('\n');
+            break;
+        }
+        if (c == 0x08 || c == 0x7F) {
+            if (i > 0) {
+                i--;
+                fputs("\b \b", stdout);
+            }
+            continue;
+        }
+        buf[i++] = (char)c;
+        putchar(c);
+    }
+    buf[i] = '\0';
+    return i;
+}
+
+static void dispatch(char *line)
+{
+    char *argv[CLI_MAX_ARGS];
+    int argc = 0;
+    char *tok = strtok(line, " \t");
+    while (tok != NULL && argc < CLI_MAX_ARGS) {
+        argv[argc++] = tok;
+        tok = strtok(NULL, " \t");
+    }
+    if (argc == 0) {
+        return;
+    }
+    for (int i = 0; i < s_cmd_count; i++) {
+        if (strcmp(s_cmds[i].name, argv[0]) == 0) {
+            s_cmds[i].func(argc, argv);
+            return;
+        }
+    }
+    printf("未知命令: %s (输入 help 查看可用命令)\n", argv[0]);
+}
+
+void cli_init(void)
+{
+    setvbuf(stdin, NULL, _IONBF, 0);
+    setvbuf(stdout, NULL, _IONBF, 0);
+}
+
+void cli_run(void)
+{
+    char line[CLI_LINE_MAX];
+    printf("\nMoonshineOS CLI ready. 输入 help 查看命令。\n");
+    while (1) {
+        printf("MSOS> ");
+        read_line(line, sizeof(line));
+        dispatch(line);
+    }
+}
diff --git a/MSOS_ESP/main/moonshineOS_core/cli.h b/MSOS_ESP/main/moonshineOS_core/cli.h
new file mode 100644
index 0000000..2888c8b
--- /dev/null
+++ b/MSOS_ESP/main/moonshineOS_core/cli.h
@@ -0,0 +1,7 @@
+#ifndef CLI_H_
+#define CLI_H_
+
+void cli_init(void);
+void cli_run(void);
+
+#endif