High-strength long-life corrugated paper packaging box

The invention belongs to the field of packaging boxes and particularly relates to a high-strength long-life corrugated paper packaging box. The high-strength long-life corrugated paper packaging box comprises a cuboid-structured box body. A protective mechanism is arranged respectively on each of the four edges of the side faces of the box body. Each protective mechanism comprises a lower protection board, a middle protection board fixedly connected to the lower protection board, a support rod fixedly connected to the upper end of the middle protection board, a nut board fixedly connected to the support rod, a screw rod in threaded connection with the nut board and a pressing board arranged at the lower end of the screw rod. The lower protection boards are attached to the lower surface ofthe box body tightly. The middle protection boards are attached to the edges of the box body tightly. The upper surface of the box body is compressed by the pressing plates. According to the high-strength long-life corrugated