Terminals have gradually been widely used in various fields, and have played a connection role in transmitting electrical signals and conduction, thereby reducing workload and production cost consumption, bringing many conveniences to production and use, and avoiding many troubles. So as to achieve the purpose of simplifying the product structure and saving manufacturing costs. Therefore, in view of the benefits of terminal testing combined with market analysis, it is recommended that an instrument suitable for terminal testing can be tested with professional testing equipment. Commonly used terminal inspection equipment are: tool microscope and optical imager.