Multifunction self-controlled alarming anti-theft door lock

The utility model relates to a multifunction self-controlled alarming anti-theft door lock which mainly comprises a lock body, a quiescent lock catch, a lock tongue, a lock pin, a power supply, an alarm circuit and a loudspeaker. The utility model is characterized in that a lock tongue alarm contactor, a lock body alarm contactor, an oblique lock tongue alarm contactor and a cipher rotary disc alarm contactor are arranged in the lock body and connected with the alarm circuit. A battery box is provided with a popped apparatus of which the outlet has the same direction as the outlet of the lock tongue. The alarm circuit is provided with an alarm contactor which can switch on the alarm circuit on at least one point of a screw, the battery box, a horn protective cover, the quiescent lock catch, a handle, the lock pin and a safety switch. The utility model can give an alarm automatically when any position is touched unconventionally.