diff --git a/contracts/interfaces/IDBITAirdrop.sol b/contracts/interfaces/IDBITAirdrop.sol
deleted file mode 100644
index 08354cd..0000000
--- a/contracts/interfaces/IDBITAirdrop.sol
+++ /dev/null
@@ -1,13 +0,0 @@
-pragma solidity ^0.8.9;
-// SPDX-License-Identifier: apache 2.0
-
-interface IDBITAirdrop {
-
-    function merkleVerify(bytes32[] memory proof, bytes32 root, bytes32 leaf) external pure returns (bool);
-    function claimStatus(address _to) external view returns (bool);
-
-    function claimAirdrop(bytes32[]  memory _proof, uint256 airdrop_index, address _to, uint256 _amount) external  returns (bool);
-    function setAirdrop(bytes32 _merkleRoot, uint setAirdropSupply)external returns (bool);
-    function startClaim()external view returns (bool);
-
-}
\ No newline at end of file