Anti-theft lock with automatic cylinder hiding function

The invention relates to an anti-theft lock with an automatic cylinder hiding function. The anti-theft lock comprises a fixing plate (1), a baffle (4), an electromagnet (2), a special-shaped connecting rod (3), a lock cylinder hole cam structural component, a self-return separation-reunion shifting piece structural component and a lock protecting plate. The fixing plate (1) is provided with a lock cylinder hole, a baffle locating and guiding groove (11) and a self-return guiding groove (8). The baffle (4), the electromagnet (2) and the special-shaped connecting rod (3) are arranged on the face A of the fixing plate (1). The self-return separation-reunion shifting piece structural component and the lock cylinder hole cam structural component are arranged on the face B of the fixing plate (1). The door lock is locked and unlocked through effective matched actions of the parts, and when a mechanical key is pulled out, a mechanical lock cylinder is instantly hidden and protected at the same time.