diff --git a/sdk-go/client/client.go b/client/client.go
similarity index 100%
rename from sdk-go/client/client.go
rename to client/client.go
diff --git a/sdk-go/client/client_test.go b/client/client_test.go
similarity index 100%
rename from sdk-go/client/client_test.go
rename to client/client_test.go
diff --git a/sdk-go/client/dto.go b/client/dto.go
similarity index 100%
rename from sdk-go/client/dto.go
rename to client/dto.go
diff --git a/sdk-go/go.mod b/go.mod
similarity index 68%
rename from sdk-go/go.mod
rename to go.mod
index a3100d3..4c941ab 100644
--- a/sdk-go/go.mod
+++ b/go.mod
@@ -4,4 +4,4 @@ go 1.23
 
 require github.com/tjfoc/gmsm v1.4.1
 
-require golang.org/x/sync v0.9.0 // indirect
+require golang.org/x/sync v0.9.0
diff --git a/sdk-go/go.sum b/go.sum
similarity index 100%
rename from sdk-go/go.sum
rename to go.sum
diff --git a/sdk-go/sm2util/util.go b/sm2util/util.go
similarity index 100%
rename from sdk-go/sm2util/util.go
rename to sm2util/util.go