diff --git a/SM3性能优化.md b/SM3性能优化.md
index 7061efc..ed63212 100644
--- a/SM3性能优化.md
+++ b/SM3性能优化.md
@@ -163,7 +163,7 @@ SM3的第一版，比SHA256复杂，不知道有没有继续优化的空间。
 ```
 
 ARM64 NEON 版（没有用VTBL表查询指令）：
-```
+```asm
 VEXT $12, XWORD1.B16, XWORD0.B16, XTMP0.B16;  // XTMP0 = W[-13] = {w6,w5,w4,w3}, Vm = XWORD1, Vn = XWORD0
 VSHL $7, XTMP0.S4, XTMP1.S4;
 VSRI $25, XTMP0.S4, XTMP1.S4;                 // XTMP1 = W[-13] rol 7