diff --git a/hwe/sammo/Enums/MessageType.php b/hwe/sammo/Enums/MessageType.php
new file mode 100644
index 00000000..d0692861
--- /dev/null
+++ b/hwe/sammo/Enums/MessageType.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace sammo\Enums;
+
+enum MessageType: string
+{
+  case private = 'private';
+  case public = 'public';
+  case national = 'national';
+  case diplomacy = 'diplomacy';
+  //TODO: System을 정식으로 추가해야함.
+}