Advantages electrophoretic coating of electrophoretic coating technology research starts from a hundred years ago, people are constantly improving based on the metal surface corrosion and rust requirements and related surface treatment technology could not be solved under the pressure of this demand, while was gradually developed. Until 60? Years before by George? Dr. Brewer and the Ford Motor Company successfully developed anodic electrophoretic paint. It was first used in the Ford Motor Company's coating line, with the anodic electrophoretic paint production and use, and it has been such as to recognize and promote the application. After that, the development of electrophoresis technology advances, product variety type epoxy resin and polyurethane acrylic-development type. Protected variety of products from the automotive industry is also extended to bicycles, motorcycles and home appliances, light jewelry industry, such as: air conditioning, color TV, washing machines, motorcycles, glasses, locks, lighting and accessories, hair clips, tie clips and various metals industry surface rust and aluminum industries. 1 ?, in a concave portion, a protective film can be formed to complete the uniform, and can use to adjust the operating voltage is different, the plating thickness can be controlled, to achieve high corrosion resistance, and eliminates the thickness of the plating process is not both electrode effect, but also eliminates the painting process of the crust, tears of failure. ?, 2 ?, coating efficiency up to 95% compared with the painting method, to reduce material waste. 3 ?, with water as solvent, eliminating the fire hazard, but also greatly reduces the water and air pollution, improve safety, reduce the cost of environmental protection equipment. 4 ?, precious metal coating thickness can be reduced, and can still be maintained beyond the life of the original coating, electrophoresis paint color can be replaced with gold-plated, greatly reducing the production of this. ????? ?? 5, high productivity, shorten production time. Metal surface treatment, plating, coating, etc., after the completion of carrying large amounts of water, conventional spray drying method to be first reproduction, time-consuming and a waste of energy, and electrophoresis continuous operation, easy to mass production and automation.