diff --git a/Cargo.toml b/Cargo.toml
index 0d8bbcb2..12df18d8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 prost = "0.11"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
+strum = "0.25"
+strum_macros = "0.25"
 tonic = "0.9"
 
 [build-dependencies]
diff --git a/build.rs b/build.rs
index eae7d9a6..337b81f6 100644
--- a/build.rs
+++ b/build.rs
@@ -26,6 +26,10 @@ fn main() {
             "SemanticType",
             "#[derive(::serde::Serialize, ::serde::Deserialize)]",
         )
+        .enum_attribute(
+            "region.RegionRequest.body",
+            "#[derive(strum_macros::AsRefStr)]",
+        )
         .compile(
             &[
                 "proto/greptime/v1/database.proto",
diff --git a/src/v1/region.rs b/src/v1/region.rs
index 013c60a5..84fa568f 100644
--- a/src/v1/region.rs
+++ b/src/v1/region.rs
@@ -13,3 +13,15 @@
 // limitations under the License.
 
 tonic::include_proto!("greptime.v1.region");
+
+#[cfg(test)]
+mod test {
+    use crate::v1::region::region_request::Body as RegionRequest;
+    use crate::v1::region::InsertRequests;
+
+    #[test]
+    fn test_region_request_name() {
+        let request = RegionRequest::Inserts(InsertRequests { requests: vec![] });
+        assert_eq!("Inserts", request.as_ref());
+    }
+}