1. A human body security inspection method, comprising the steps of: retrieving in real-time scanning row or column image data of a personal to be inspected; transmitting in real-time the image data to an algorithm processing module and processing these image data by the algorithm processing module; automatically recognizing a suspicious matter by a suspicious matter automatic target recognition technique, after retrieving image data of an entire scanning image of the personal to be inspected, wherein any one of the following three inspection modes is selected based on the selection of a remote operator, so as to perform a further processing on basis of the recognition result of the suspicious matter, (1) determining whether to give an alarm that the suspicious matter is present or not, without displaying any image, directly from an automatic recognition result of the suspicious matter; (2) using a split-display technique to display a privacy protection image of the personal to be inspected and an outline image of the personal to be inspected on an equipment end display and a remote operation end display of the human body security inspection system respectively, and determining whether to give an alarm from the automatic recognition result of the suspicious matter and showing the suspicious matter in a form of a suspected mark in the privacy protection image and the outline image respectively; (3) using the split-display technique to display the privacy protection image and the outline image on the equipment end display and the remote operation end display of the human body security inspection system respectively, and showing the suspicious matter on the privacy protection image and the outline image in a form of a suspected mark, performing a modifying operation of the suspected mark on the outline image by the remote operator and confirming to submit this modifying operation, determining whether to give an alarm from the results by the operation of the operator, and displaying the modified suspected mark on the privacy protection image.