Industrial endoscope is currently widely used in the field of industrial manufacturing and maintenance of a nondestructive testing equipment, it extends the visual distance of the human eye, breaking through the blind Angle of human eye observation, can accurately and clearly observe the internal machine equipment or parts of the inner surface of the situation. Such as wear damage, surface cracks and abnormal attachments, etc., avoid unnecessary equipment decomposition, disassembly and possible parts damage in the inspection process, with easy operation, high inspection efficiency, objective and accurate results, is a powerful tool for production process control and quality control.