With the rapid development of modern society and the continuous advancement of technology, people are paying more and more attention to the safety of various electronic products. The quality and functional requirements of electronic products are also getting higher and higher, and the connecting lines are used as equipment and equipment, and The importance of carrying data and power exchange carriers between machines, machines and machines is self-evident. The waterproof requirements of electronic products have become one of the basic elements of the quality of more and more electronic products, especially the connection devices that carry wired transmission data and power. The quality of waterproofing directly affects the function and life of the products.