Safety checks involve the personal safety of passengers, so passengers must be checked before they are allowed to enter the appropriate places. In addition, regardless of occupation, gender and nationality, the goal of security inspection is personnel. Everyone is equal before the security check. The main content of safety inspection is to check whether passengers and their luggage carry guns, ammunition, inflammable, explosive, corrosive, toxic, radioactive substances and other dangerous goods to ensure the safety of passengers' personal and property. Existing safety inspection methods mainly include X-ray inspection technology, manual inspection and related equipment inspection. Among them, X-ray screening technology is the most widely used. So, is X-ray screening better than other screening methods? Here, we make a simple comparative analysis, hoping to help you better understand X-ray screening and other screening methods.