diff --git a/components/drivers/can/readme-zh.txt b/components/drivers/can/readme-zh.txt
new file mode 100644
index 0000000000..3eb63d155f
--- /dev/null
+++ b/components/drivers/can/readme-zh.txt
@@ -0,0 +1,132 @@
+说明: 
+本驱动完成了can控制器硬件抽象
+一 CAN Driver 注册
+	Can driver注册需要填充以下几个数据结构:
+	1、struct can_configure
+	{
+		rt_uint32_t baud_rate;
+		rt_uint32_t msgboxsz;
+		rt_uint32_t sndboxnumber;
+		rt_uint32_t mode      :8;
+		rt_uint32_t privmode  :8;
+		rt_uint32_t reserved  :16;
+		#ifdef RT_CAN_USING_LED
+		const struct rt_can_led* rcvled;
+		const struct rt_can_led* sndled;
+		const struct rt_can_led* errled;
+		#endif  /*RT_CAN_USING_LED*/
+		rt_uint32_t ticks;
+	#ifdef RT_CAN_USING_HDR
+		rt_uint32_t maxhdr;
+	#endif
+	};
+	struct can_configure 为can驱动的基本配置信息:
+	baud_rate :
+		enum CANBAUD
+		{
+			CAN1MBaud=0,    // 1 MBit/sec
+			CAN800kBaud,    // 800 kBit/sec
+			CAN500kBaud,    // 500 kBit/sec
+			CAN250kBaud,    // 250 kBit/sec
+			CAN125kBaud,    // 125 kBit/sec
+			CAN100kBaud,    // 100 kBit/sec
+			CAN50kBaud,     // 50 kBit/sec
+			CAN20kBaud,     // 20 kBit/sec
+			CAN10kBaud      // 10 kBit/sec
+		};
+		配置Can的波特率。
+	msgboxsz : Can接收邮箱缓冲数量,本驱动在软件层开辟msgboxsz个接收邮箱。
+	sndboxnumber : can 发送通道数量,该配置为Can控制器实际的发送通道数量。 
+	mode :
+		#define RT_CAN_MODE_NORMAL 0		正常模式
+		#define RT_CAN_MODE_LISEN 1		只听模式
+		#define RT_CAN_MODE_LOOPBACK 2		自发自收模式
+		#define RT_CAN_MODE_LOOPBACKANLISEN 3	自发自收只听模式
+		配置Can 的工作状态。
+	privmode :
+		#define RT_CAN_MODE_PRIV 0x01 		处于优先级模式,高优先级的消息优先发送。
+		#define RT_CAN_MODE_NOPRIV 0x00
+		配置Can driver的优先级模式。
+	#ifdef RT_CAN_USING_LED
+	const struct rt_can_led* rcvled;
+	const struct rt_can_led* sndled;
+	const struct rt_can_led* errled;
+	#endif  /*RT_CAN_USING_LED*/
+	配置can led信息, 当前can驱动的led使用了 pin驱动,
+	开启RT_CAN_USING_LED时要确保当前系统已实现pin驱动。
+	rt_uint32_t ticks : 配置Can driver timer周期。
+	#ifdef RT_CAN_USING_HDR
+		rt_uint32_t maxhdr;
+	#endif
+	如果使用硬件过滤,则开启RT_CAN_USING_HDR, maxhdr 为Can控制器过滤表的数量。
+	2、struct rt_can_ops
+	{
+		rt_err_t (*configure)(struct rt_can_device *can, struct can_configure *cfg);
+		rt_err_t (*control)(struct rt_can_device *can, int cmd, void *arg);
+		int (*sendmsg)(struct rt_can_device *can, const void* buf, rt_uint32_t boxno);
+		int (*recvmsg)(struct rt_can_device *can,void* buf, rt_uint32_t boxno);
+	};
+	struct rt_can_ops 为要实现的特定的can控制器操作。
+	rt_err_t (*configure)(struct rt_can_device *can, struct can_configure *cfg);
+	configure根据配置信息初始化Can控制器工作模式。
+	rt_err_t (*control)(struct rt_can_device *can, int cmd, void *arg);
+	control 当前接受以下cmd参数:
+		#define RT_CAN_CMD_SET_FILTER      0x13
+		#define RT_CAN_CMD_SET_BAUD        0x14
+		#define RT_CAN_CMD_SET_MODE        0x15
+		#define RT_CAN_CMD_SET_PRIV        0x16
+		#define RT_CAN_CMD_GET_STATUS      0x17
+		#define RT_CAN_CMD_SET_STATUS_IND  0x18
+	int (*sendmsg)(struct rt_can_device *can, const void* buf, rt_uint32_t boxno);
+	sendmsg向Can控制器发送数,boxno为发送通道号。
+	int (*recvmsg)(struct rt_can_device *can,void* buf, rt_uint32_t boxno);
+	recvmsg从Can控制器接收数据,boxno为接收通道号。
+	struct rt_can_device
+	{
+		struct rt_device          parent;
+
+		const struct rt_can_ops *ops;
+		struct can_configure   config;
+		struct rt_can_status   status;
+		rt_uint32_t timerinitflag;
+		struct rt_timer timer;
+		struct rt_can_status_ind_type status_indicate;
+	#ifdef RT_CAN_USING_HDR
+		struct rt_can_hdr* hdr;
+	#endif
+		void *can_rx;
+		void *can_tx;
+	};
+	填充完成后,便可调用rt_hw_can_register完成can驱动的注册。
+二、 CAN Driver 的添加:
+	要添加一个新的Can驱动,至少要完成以下接口。
+	1、struct rt_can_ops
+	{
+		rt_err_t (*configure)(struct rt_can_device *can, struct can_configure *cfg);
+		rt_err_t (*control)(struct rt_can_device *can, int cmd, void *arg);
+		int (*sendmsg)(struct rt_can_device *can, const void* buf, rt_uint32_t boxno);
+		int (*recvmsg)(struct rt_can_device *can,void* buf, rt_uint32_t boxno);
+	};
+	2、 rt_err_t (*control)(struct rt_can_device *can, int cmd, void *arg);
+	接口的
+		#define RT_CAN_CMD_SET_FILTER      0x13
+		#define RT_CAN_CMD_SET_BAUD        0x14
+		#define RT_CAN_CMD_SET_MODE        0x15
+		#define RT_CAN_CMD_SET_PRIV        0x16
+		#define RT_CAN_CMD_GET_STATUS      0x17
+		#define RT_CAN_CMD_SET_STATUS_IND  0x18
+	若干命令。
+	3、can口中断,要完接收,发送结束,以及错误中断。
+		#define RT_CAN_EVENT_RX_IND          0x01    /* Rx indication */
+		#define RT_CAN_EVENT_TX_DONE         0x02    /* Tx complete   */
+		#define RT_CAN_EVENT_TX_FAIL         0x03    /* Tx complete   */
+		#define RT_CAN_EVENT_RX_TIMEOUT      0x05    /* Rx timeout    */
+		#define RT_CAN_EVENT_RXOF_IND        0x06    /* Rx overflow */
+		中断产生后,调用rt_hw_can_isr(struct rt_can_device *can, int event)
+		进入相应的操作,其中接收发送中断的event,最低8位为上面的事件,16到24位为通信通道号。
+	一个作为一个例子,参见bsp/stm32f10x/driver下的bxcan.c 。
+三、CAN Driver的使用:
+	一个使用的例子,参数bsp/stm32f10x/applications下的canapp.c
+四、当前Can驱动,没有实现轮模式,采用中断模式,bxcan驱动工作在loopback模式下的时候不能读数据。
+
+五、当前Can驱动,在stm32f105上测试,暂无问题。