diff --git a/SM2-WWMM-(2).md b/SM2-WWMM-(2).md
index 19954d7..f767f81 100644
--- a/SM2-WWMM-(2).md
+++ b/SM2-WWMM-(2).md
@@ -620,3 +620,8 @@ vs.
   MOVQ $0x100000000, AX
   MULQ t0
 ```
+**MULX**版本：  
+```asm
+  MOVQ $0x100000000, DX
+  MULXQ t0, AX, DX
+```