Egg laying is constrained by the season, and there are certain rules. Normally healthy chickens usually start egg production from February each year and gradually rise, reaching the peak of egg production by May. In June, its egg production began to decline. At the same time as the egg production decreased, the appetite of the chicken was strong and the feed intake increased. If no restrictions are imposed on the breeding, the body of the chicken absorbs and uses excessive nutrients, excess nutrients in the body are converted into a large amount of body fat, and the hen becomes over-fertilized. In this way, not only the feed is wasted, but also the raising cost is increased, and it has a great influence on the laying performance of chickens even in the following year. Therefore, the laying hens should also be restricted to rearing after peak egg production. One is to gradually reduce the amount of protein and carbohydrate feeds such as fishmeal, blood meal, beancake, corn, dried melon, and sorghum; the other is to increase the amount of greenish succulent and bran-type roughage.