Abstract: The present invention relates to a system and a method for detecting a dangerous substance by using artificial intelligence. The present invention is characterized in that a dangerous substance can be rapidly detected from substances being inspected at airports, ports, military bases, event venues, stadiums, exhibition halls, concert halls, government office buildings, or venues where VIP protection is sought, by learning the X-ray color of each dangerous substance through deep learning, using the property that a color indicated by a constituent atom of a substance being inspected with the highest atomic number in the periodic table is displayed when the substance being inspected is irradiated with X-rays from an X-ray instrument.

Abstract: Provided is a method for determining an atom using four-color X-ray equipment capable of determining which group an atom having a greatest atomic number among atoms constituting a material belongs on the periodic table.