Multi-function door lock with theft-proof for eight places and automatic alarming for six places

The utility model relates to a multi-function door lock with eight-place theft prevention and six-place automatic alarm. The utility model is characterized in that the upper part of a lock body is provided with DC power supply; one side of the lock body is placed with a horn and an alarm circuit; a hook place of a lock bolt is provided with toothed key teeth; both sides of the lock bolt are provided with electrode pieces; a locking is provided with anti-drilling movable pieces; anti-unlocking circuit is arranged in the lock; fixing screws are arranged in the lock body in an insulation way; a fixed lock seat is provided with an alarm device; a metal casing protection body is arranged out of an alarm loudspeaker. The lock can prevent prizing, sawing, disassembly, drilling and violence destroy, can prevent indoor unlocking because the lock is locked out of a room, can alarm, and can be used for security and theft protection of single and double doors of building facilities and important security departments.