Motorization is the development course of motor-vehicle in use and possess. Motorization contains the innovations of the transportation types and transportation technology. There is a mutual “push pull” relationship between the motorization and urban economy, between the motorization and urban spatial structure, between the motorization and stratum scatter, between the motorization and environment. In the paper, the basic characteristics and the macroscopical background were given. The basic countermeasures of China’s urban motorization were given from analyze the relationship between the motor vehicle industry and urban transportation system.