The present disclosure discloses a method, apparatus and system for assisting security inspection, and relates to the field of security inspection. The method includes: acquiring registration information of an inspected object; acquiring a standard scanned image corresponding to the registration information; displaying the standard scanned image in an AR manner, so as to determine whether the inspected object is a suspicious object through comparing the standard scanned image with an actual scanned image, the actual scanned image comprises an image of the inspected object.