Plastic cap visual defect inspection machine is equipped with an intelligent processing platform. When the products to be tested enter the inspection area, the industrial camera can capture multiple photos in about 0.1 seconds. Through AI algorithms, it compares against the sample database, simulating human thought processes to conduct quality inspections on cap appearances. Issues such as black spot, material deficiency, and deformation of bottles are quickly recognized and eliminated, this appearance defect inspection system greatly improve the production efficiency and ensuring product qualification rate.