The invention discloses a waste recycling device and method. The device comprises a box body, a feeding shaping device and a stacking device. A recycling bin is arranged in the box body, and a feedingport leading to the recycling bin is formed in the box wall of the box body. The feeding shaping device is arranged at the feeding port; the stacking device is arranged in the recycling bin and usedfor stacking the paper boxes entering from the feeding port; the stacking device comprises a seat body, a stacking sliding table, a stacking auxiliary device and an elastic element; the stacking sliding table can slide relative to the base body, and the stacking auxiliary device is installed on one side of the seat body and used for assisting in sequentially stacking cartons on the stacking sliding table. The elastic element is arranged between the stacking sliding table and the seat body. According to the waste recycling device and the recycling method, the stacking auxiliary device is arranged in the box body, so that the waste cartons put into the recycling cabin can be effectively stacked on the stacking sliding table, the volume of the waste cabin can be fully utilized to contain themaximum number of waste cartons, and the waste cartons are effectively and automatically recycled.