Dustproof lock

A dustproof lock comprises a lock beam and a lock body, and is characterized in that the further dustproof lock comprises a conical dustproof stop block, a large lock cylinder and a lock cover, wherein the conical dustproof stop block is located in the root position of the lock beam; the large lock cylinder is located at the bottom of the lock body; a locked piece is mounted on the lock cover; and the dustproof lock is covered with the lock cover. The dustproof lock has the advantages as follows: the dustproof lock is simple in structure, low in cost and good in dustproof effect; and the lock is guaranteed to be used normally in a severe dust pollution environment.