Boom fluctuation signal control system of retail commerce monitors and regulates the boom process of retail commerce by using a group of red, yellow and green lamps. In 1988 and 1989, boom fluctuation signal control system of retail commerce directly showed boom situation of China's retail commerce. Graph of boom fluctuation signal control system of retail commerce from November of 2001 to October of 2002 demonstrated that boom fluctuation of China's retail commerce would fluctuate narrowly at high place though China's retail had not entered rapid growth era.