Method for detecting industry CT of batch product internal material density

The invention discloses an industry CT method for detecting internal material density of bulk products, the method is based on the theory that linear relationship is existed in CT values of different CT images of same product, property relation in the different CT images of different batch of products is determined through put sub-kind pieces which have greater difference in density into different detection group in the same batch of product, and Data conversion relationship in the different CT values of the different CT images is given. The outstanding advantages of the invention is that an adjustment standard in different CT detections of the same patch of the products is unified, and density distributed information reported by each CT image in the same patch of the products can be compared, not only the need required by density distributed of the industry CT detection in mass production is satisfied, but also the application range of the industry CT detection is broadened.