There are two kinds of broilers in cages. One is vertical three-layer cage culture. Disadvantages are: it is not easy to install automatic feeder and automatic dung scraper, and the manual labor input is too large; The lighting on the lower two floors is insufficient. Second, the disadvantages of ladder-type three-layer cage culture are that it is inconvenient to raise artificially, the cage occupies a large space, and there are relatively few chickens in the same space. Advantages of keeping broilers in cages: 1. Make full use of building space, and reduce the site and construction investment cost of each chicken. 2, the feed rate of return is high, and the chicken growth advantage is strong. 3, it is easy to heat up, saves energy and greatly reduces the fuel cost of each chicken. 4. Intestinal diseases have been greatly reduced. 5. Being able to find the sick and weak early, which is convenient for timely elimination, and is helpful for controlling large-scale diseases. 6, can be released 40 days ago, shortening the feeding cycle. 7. Save the medicine fee. The medicine fee for each chicken is less than one yuan. Disadvantages of caged broilers: 1, high one-time investment. 2. ventilation is difficult. It is difficult to cool down in summer. It takes a lot of work to clean up the feces. 5, chicken drinking water is limited to two nipples, and sometimes there will be insufficient drinking water. 6, landing chicken is not easy to catch, often weakened. 7. Limited by the trough, chickens will be trampled to death when they compete for food. 8, vertical three-layer cage culture, the lower layer of insufficient light, affecting growth. 9, disinfection with chicken can not be thorough, there will be dead ends. 10, respiratory diseases are frequent. All the above shortcomings can be overcome, and can be improved with a little brains.