At present, foreign automobile wiring harness cables and connector terminals are generally connected by crimping, and the connection technology is very stable and reliable. However, the production of automobile wiring harnesses in my country is still in the development stage, especially the reliable connection process technology of automobile wiring harnesses has not yet been fully mastered . According to the long-term experience in the connection and assembly of automobile wiring harnesses, among the three connection methods of welding, crimping and mechanical connection, the crimping method is the most applicable, and the connection is fast, reliable, firm, and has a long life. It is suitable for mass processing. The research on crimping technology is the most important for the reliable connection of automobile high-voltage wiring harness cables and connector terminals.