diff --git a/zh-cn/device-dev/driver/driver-platform-spi-des.md b/zh-cn/device-dev/driver/driver-platform-spi-des.md
index 134e38f4c2e8d3221bfecbc894b5455006093d31..79787c85ae86460d349cb0ea0cb55d33729ff6e3 100644
--- a/zh-cn/device-dev/driver/driver-platform-spi-des.md
+++ b/zh-cn/device-dev/driver/driver-platform-spi-des.md
@@ -91,7 +91,7 @@ DevHandle SpiOpen(const struct SpiDevInfo *info);
 
 ```
 struct SpiDevInfo spiDevinfo;       /* SPI设备描述符 */
-DevHandle spiHandle = NULL; /* SPI设备句柄  */
+DevHandle spiHandle = NULL;         /* SPI设备句柄  */
 spiDevinfo.busNum = 0;              /* SPI设备总线号 */
 spiDevinfo.csNum = 0;               /* SPI设备片选号 */