diff --git a/src/robomaster.c b/src/robomaster.c
index 73f3eb0..f7f87a9 100644
--- a/src/robomaster.c
+++ b/src/robomaster.c
@@ -61,3 +61,10 @@ set_sdk_connection_req_new (
     struct Message* message = message_new(session, 0x3F, SET_SDK_CONNECTION_CMDID, sizeof(struct SetSdkConnectionReq), msg);
     return message;
 }
+
+const Message
+set_system_led_req_new (
+		Session session,
+		struct SetSystemLedReq* msg ) {
+    return message_new(session, 0x3F, SET_SYSTEM_LED_CMDID, sizeof(struct SetSystemLedReq), msg);
+}
diff --git a/src/robomaster.h b/src/robomaster.h
index bf5ad1c..ca4db06 100644
--- a/src/robomaster.h
+++ b/src/robomaster.h
@@ -147,3 +147,46 @@ struct PACKED GetVersionResp {
 };
 
 const Message get_version_req_new(Session session);
+
+static const uint8_t SET_SYSTEM_LED_CMDID = 0x33;
+
+enum LEDCOMP {
+    LEDCOMP_BOTTOM_BACK = 0x1;
+    LEDCOMP_BOTTOM_FRONT = 0x2;
+    LEDCOMP_BOTTOM_LEFT = 0x4;
+    LEDCOMP_BOTTOM_RIGHT = 0x8;
+    LEDCOMP_BOTTOM_ALL = 0xf;
+    LEDCOMP_TOP_LEFT = 0x10;
+    LEDCOMP_TOP_RIGHT = 0x20;
+    LEDCOMP_TOP_ALL = 0x30;
+    LEDCOMP_ALL = 0x3f;
+};
+
+enum LEDEFFECT {
+    LEDEFFECT_OFF = 0;
+    LEDEFFECT_ON = 1;
+    LEDEFFECT_BREATH = 2;
+    LEDEFFECT_FLASH = 3;
+    LEDEFFECT_SCROLLING = 4;
+};
+
+struct PACKED SetSystemLedReq {
+    uint32_t comp_mask;
+    uint16_t led_mask;
+    struct {
+        uint8_t effect_mode : 4;
+        uint8_t control_mode : 4;
+    };
+    uint8_t red;
+    uint8_t green;
+    uint8_t blue;
+    uint8_t loop;
+    uint16_t t1;
+    uint16_t t2;
+};
+
+struct PACKED SetSystemLedResp {
+    uint8_t retcode;
+};
+
+const Message set_system_led_req_new(Session session, struct SetSystemLedReq* msg);