The design of charging gun not only needs the support of core technology, but also needs to consider the material selection. The material needs to have the characteristics of flame retardant, environmental protection, wear resistance, impact resistance, high oil resistance, ultraviolet resistance, high and low temperature resistance, leakage prevention, insulation, etc. Anti-leakage and insulation are very important. Before production and use, they need to be continuously tested to meet the specified standards before they can be used to ensure the safety of users. The design of the charging gun should also take into account the environment of use. Different environments have different requirements for quality and material, and there will be more factors to consider in harsh environments. The charging gun needs to go through professional three-proof design, anti-corrosion design and other protective measures to improve the environmental reliability of the product and ensure the durability of the equipment. After market research, the designer found deficiencies based on the advantages of the existing products, and worked out the design of this AC charging gun through continuous conception. The AC charging gun incorporates rectangular elements from the appearance design, and the lines are smooth and smooth. The color is black, which gives people a stable and reliable feeling visually. The handle of the charging gun is designed with wavy stripes to increase the friction force, improve the degree of hand holding, and prevent the phenomenon of hand sliding and falling off and unstable holding. The charging gun is very simple and convenient to use. Fine workmanship, strict control of product quality.