diff --git a/sm9/README.md b/sm9/README.md
index 81af693..81776ff 100644
--- a/sm9/README.md
+++ b/sm9/README.md
@@ -15,13 +15,6 @@
     cpu: Intel(R) Core(TM) i5-9500 CPU @ 3.00GHz
     BenchmarkSign-6   	    1344	    871597 ns/op	   35870 B/op	    1013 allocs/op
 
-    优化后(减少乘法、优化Invert)性能：
-    goos: windows
-    goarch: amd64
-    pkg: github.com/emmansun/gmsm/sm9
-    cpu: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz
-    BenchmarkSign-8   	    2841	    392368 ns/op	   19845 B/op	     545 allocs/op
-
 **SM9 Verify Benchmark**
 
     goos: windows
@@ -30,13 +23,6 @@
     cpu: Intel(R) Core(TM) i5-9500 CPU @ 3.00GHz
     BenchmarkVerify-6   	     352	   3331673 ns/op	  237676 B/op	    6283 allocs/op
 
-    优化后(减少乘法、优化Invert)性能：
-    goos: windows
-    goarch: amd64
-    pkg: github.com/emmansun/gmsm/sm9
-    cpu: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz
-    BenchmarkVerify-8   	     709	   1710580 ns/op	  179686 B/op	    4370 allocs/op
-
 **SM9 Encrypt(XOR) Benchmark**
 
     goos: windows
@@ -45,13 +31,6 @@
     cpu: Intel(R) Core(TM) i5-9500 CPU @ 3.00GHz
     BenchmarkEncrypt-6   	    1120	    971188 ns/op	   38125 B/op	    1036 allocs/op
 
-    优化后(减少乘法、优化Invert)性能：
-    goos: windows
-    goarch: amd64
-    pkg: github.com/emmansun/gmsm/sm9
-    cpu: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz
-    BenchmarkEncrypt-8   	    2551	    440724 ns/op	   21149 B/op	     553 allocs/op
-
 **SM9 Decrypt(XOR) Benchmark**
 
     goos: windows
@@ -60,13 +39,6 @@
     cpu: Intel(R) Core(TM) i5-9500 CPU @ 3.00GHz
     BenchmarkDecrypt-6   	     507	   2345492 ns/op	  202360 B/op	    5228 allocs/op
 
-    优化后(减少乘法、优化Invert)性能：
-    goos: windows
-    goarch: amd64
-    pkg: github.com/emmansun/gmsm/sm9
-    cpu: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz
-    BenchmarkDecrypt-8   	     925	   1310317 ns/op	  159924 B/op	    3811 allocs/op
-
 **SM9 Generate User Sign Private Key Benchmark**
 
     goos: windows