The utility model discloses a multi -functional entrance guard's trick lock, its constitution includes: the lock core, the lock core be connected with drive arrangement no. 1, drive arrangement no. 2 respectively, drive arrangement no. 1 be connected with the trick lock, drive arrangement no. 2 and fingerprint know the lock and be connected, the lock core install inside the lock, the lock on have a camera, camera next door install the flash light, the lock lower extreme install audible and visual alarm, audible and visual alarm pass through radio signal and be connected with entrance guard room computer terminal, lock upper end install the recording device. This multi -functional entrance guard's trick lock has the dual fail -safe, through dual mode switch lock, avoid can't opening the lock because of one of them kind mode and hinder work, the entrance guard room nobody the time can take notes the people of every switch lock, leave the evidence to all crimes, external working personnel meet the unmanned condition message of also can recording, the convenient contact of the information that leaves.