Abstract: Based on tne experiential summary of factory layer production systems in Beijinq, the imperativeness of constructinq and developinq broiler production systems in big and middle cites is raised.Acoordinq to the key links of broiler production systems, six aspects are analysed respectively These aspects are breed chicken house, hatchery, chick house, slaughterhouse, cold storage and feedprocessinq plant In the end, the reasonable definitions of constructive scale and design parameter are discussed after absorbinq domestic and abroad experience.