diff --git a/code/AuthorityDao.java b/code/AuthorityDao.java
new file mode 100644
index 0000000..087ac19
--- /dev/null
+++ b/code/AuthorityDao.java
@@ -0,0 +1,15 @@
+package com.dao;
+
+import java.sql.SQLException;
+import java.util.*;
+
+import com.domain.Authority;
+import com.domain.Dynamic;
+
+public interface AuthorityDao extends Dao{
+	
+//	public PostCheck findDyid(int Dyid) throws SQLException;
+    public List<Authority> listAuthority()throws SQLException;
+	public int removeAuthority(int Cid)throws SQLException;
+    
+}
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