The invention discloses a physical synthesis method for preventing cage reared chicks from vent pecking, and belongs to a chick breeding method, and an objective is to provide a method for preventing cage reared chicks from vent pecking. The technical scheme comprises hanging red strips of cloth, or melon vine plants, or tuberous plants for chicks to peck in a cage; using red light in a brooding room; and mixing gravels in size of rice grain in forage. The method is simple and feasible, and is low in cost and convenient in operation, and would not hurt the chicks. The method can effectively reduce occurrence of vent pecking, and is a method for preventing cage reared chicks from vent pecking.