The feeding method of laying hen cage adopts the crane feeding method. The feed in the feed tower is transported to the crane hopper of the chicken house through the horizontal feeding device. The crane runs back and forth, and the feeder evenly distributes the feed in the trough. The feed quantity can be adjusted. This process works according to the pre-set automatic control program. The trough has an inner edge. The chicken will not throw out the feed when eating, saving the feeding cost. There are return feeders at both ends of each feed line. Regularly clean the long-term residual feed in the trough to avoid feed deterioration and waste.