diff --git a/zh-cn/device-dev/reference/hdi-apis/_cast.md b/zh-cn/device-dev/reference/hdi-apis/_cast.md
index d0ef24c0d5ad484bed2d859738f8217ad97ec1b0..15d385373043d17861f4f0a9d34ba8a0f2d33b00 100644
--- a/zh-cn/device-dev/reference/hdi-apis/_cast.md
+++ b/zh-cn/device-dev/reference/hdi-apis/_cast.md
@@ -18,9 +18,13 @@
 - output，按照输出tensor的数据类型进行类型转换。
 
 **Since:**
+
 3.2
+
 **Version:**
+
 1.0
+
 **相关模块:**
 
 [NNRt](_n_n_rt.md)