diff --git a/lib/dingtalk/api/department.rb b/lib/dingtalk/api/department.rb
index 460922d..803479d 100644
--- a/lib/dingtalk/api/department.rb
+++ b/lib/dingtalk/api/department.rb
@@ -5,6 +5,18 @@ module Dingtalk
         http_get("list?access_token=#{access_token}")
       end
 
+      def create(params)
+        http_post("create?access_token=#{access_token}", params)
+      end
+
+      def update(params)
+        http_post("update?access_token=#{access_token}", params)
+      end
+
+      def delete(id)
+        http_get("delete?access_token=#{access_token}&id=#{id}")
+      end
+
       private
         def base_url
           'department'
--
libgit2 0.21.0