According to thisanalysis of the influential factors and mechanism system of USS, the author thinksthat the change of USS is influenced by the market and the government.

• 在此基础上对城市空间结构的影响因素和作用机制进行了分析，认为我国当前城市空间结构演变机制表现为市场作用和政府管治的双重影响。