The invention relates to a ray detection information processing method. The method comprises the following steps: converting the ray detection information of workpiece to be detected into a bar code; subjecting the bar code and workpiece to ray detection at the same time to generate a negative film with a bar code; and decoding the bar code on the negative film so as to obtain the ray detection information. According to the method, the bar code with detection information is exposed on the negative film together with the workpiece. The intelligentization degree of ray detection information processing is upgraded; and the storage, recognition, and reading of the ray detection information become more convenient. The information is stored in the form of two-dimension code, the information content is increased, and the occupied negative film space is reduced.