Collision-resistant mobile phone rear cover formed at low temperature

The utility model relates to the field of mobile phone back covers, and discloses a low-temperature formed collision-resistant mobile phone back cover, which comprises a lower cover, a middle cover and an upper cover, the middle cover is arranged between the lower cover and the upper cover, the lower cover comprises a lower back plate and a lower surrounding edge, the middle cover comprises a middle back plate and a middle surrounding edge, the upper cover comprises an upper back plate and an upper surrounding edge, and the upper back plate and the upper surrounding edge are arranged on the middle cover. Reinforcing edges are fixedly arranged on the rear end faces of the lower back plate, the middle back plate and the upper back plate, a first clamping edge is fixedly arranged at the upper end of the lower back plate, a second clamping edge and a third clamping edge are fixedly arranged at the upper end and the lower end of the middle back plate respectively, and a fourth clamping edge is fixedly arranged at