The invention discloses an image detection and alarming method and device. The device mainly comprises an upper shell, a left vertical frame, a bottom plate and a right vertical frame. A pressure sensitive disk is fixedly mounted on the middle portion of the top end of the bottom plate; the the left vertical frame is fixedly installed at the left of the top of the bottom plate; and the right vertical frame is fixedly mounted at the right side of the top of the bottom plate. The upper shell is fixedly installed between the upper outer walls of the left vertical frame and the right vertical frame; a loudspeaker is fixedly installed at the left of the front end of the upper shell. An indicator light is fixedly installed at the right side of the front end of the upper shell. A housing is fixedly installed at the middle of the upper shell. On the basis of automatic face recognition and partition information comparison, regional permission division is carried out on the personnel, so that the order of entrance and exit of the personnel is improved and the personnel management and control ability is enhanced; with the full-automatic one-person one-checking mode, the supervision of activities of people in specific regions becomes convenient, the management efficiency is improved, the number of the inspection personnel is reduced, and the labor cost is lowered; and the abnormal carryingbehavior of the internal personnel can be discovered timely and effectively and warning can be carried out timely, so that the potential safety hazards are eliminated.