1. A method for security inspection, comprising: before a baggage enters a security inspection machine and after the baggage leaves the security inspection machine, acquiring information about the baggage and information about a subject person; while the baggage is inside the security inspection machine to be scanned, acquiring a scanned image of the baggage; and correlating the information about the baggage, the scanned image of the baggage and the information about the subject person in a storage system, wherein the acquiring the information about the baggage and the information about the subject person comprises analyzing a video, wherein the acquiring the information about the baggage comprises: acquiring a video of the baggage; and analyzing the video of the baggage to acquire entrance baggage information about the baggage, wherein the acquiring the information about the subject person comprises: acquiring a baggage retrieving video; and analyzing the baggage retrieving video to acquire the information about the subject person who retrieves the baggage, and wherein the analyzing the baggage retrieving video to acquire the information about the subject person comprises: matching a time when the baggage enters the security inspection machine with a time when the baggage leaves the security inspection machine to identify the baggage when the baggage leaves the security machine; and analyzing the baggage retrieving video to acquire the information about the subject person who retrieves the baggage.