Disc brake lock

The utility model relates to a disc brake lock, which comprises a cover body and a lock body, wherein the cover body is arranged on the lock body, the lock body is provided with a lock mouth, the lock mouth is provided with an upper wall, a side wall and a lower wall, the side wall is provided with a side wall connecting hole, a cover body connecting hole is arranged on the lower portion of the cover body, the lock body is provided with connectors, the connectors pass through the side wall connecting hole and the cover body connecting hole to be fixedly connected, therefore, and the mounting and the dismounting positions of the connectors are arranged on the position of the side wall of the lock mouth. When the disc brake lock is used to be locked on a brake disc, the brake disc can enter the lock mouth to block the connectors, thereby enabling dismounting tools not to dismount the connectors, being capable of guaranteeing the cover body to be fixedly arranged on the lock body, preventing anti-theft alarm components from being dismounted, and greatly improving anti-theft performance of the disc brake lock.