The invention discloses an automatic battery pack assembly equipment, which includes a carrier conveying line, a first operating station, a first butt welder, an internal resistance tester, a second Operating station, circuit board screwing machine, second butt welding machine, solder detection integrated machine, third operating station, bottom shell screwing machine, fourth operating station, surface shell screwing machine, charge and discharge tester and Laser coding machine. The invention has a high degree of automatic assembly, reduces labor intensity of workers, improves production efficiency, and reduces labor costs of enterprises.