diff --git a/public/const.go b/public/const.go
new file mode 100644
index 0000000000000000000000000000000000000000..d7f385ecf4530ebc2174c7162a44a88e65106319
--- /dev/null
+++ b/public/const.go
@@ -0,0 +1,5 @@
+package public
+
+const (
+	DUBBOGO_CTX_KEY = "dubbogo-ctx"
+)