In the 20th century, insulated wires have been widely used to make electricity safer during transmission and closer to production and life, and human society has entered the ever-changing electrical age. However, because the port uses a bare power connection method, it has its own technical limitations, so the insulation circumference cannot be achieved and the power cannot be safely connected, resulting in leakage, short circuit and other electrical accidents, which restricts the application of in-depth development of electricity.