The size of the laying hens’ cage is generally 42 cm in front height, 35 cm in height, 37 cm in cage depth, and the cage width which is cage length depends on the feeding and drinking position. The cage width is 42-45 cm, the slope of the cage bottom is about 1.0 degree, and the egg collecting trough outside the cage is 12-16 cm, the layer chicken cage consists of the front, back, top, bottom and side nets