diff --git a/cmd/hz/protobuf/plugin.go b/cmd/hz/protobuf/plugin.go
index 189aedd6f..eb812894a 100644
--- a/cmd/hz/protobuf/plugin.go
+++ b/cmd/hz/protobuf/plugin.go
@@ -362,7 +362,11 @@ func (plugin *Plugin) GenerateFiles(pluginPb *protogen.Plugin) error {
 func (plugin *Plugin) GenerateFile(gen *protogen.Plugin, f *protogen.File) error {
 	impt := string(f.GoImportPath)
 	if strings.HasPrefix(impt, plugin.Package) {
-		impt = impt[len(plugin.Package)+1:]
+		impt = impt[len(plugin.Package):]
+	}
+	// The file name must be the relative path, reference https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/compiler/plugin.proto#L122
+	if strings.HasPrefix(impt, "/") {
+		impt = impt[1:]
 	}
 	f.GeneratedFilenamePrefix = filepath.Join(util.ImportToPath(impt, ""), util.BaseName(f.Proto.GetName(), ".proto"))
 	f.Generate = true