Because of its uniqueness, Chinese Urbanization has always been a fascinating research topic in overseas academic circle since 1970s. Through a comparative study on existing theories and hypotheses developed by overseas scholars, the authors sum up five most representative schools which have great influence on this research field. They are:(1) Anti Urbanism or De Urbanization School;(2) Industry/Strategy Oriented Urbanization School;(3) The School of Dual System of Urban Centers and Rural Urban Balance Development;(4) Industrialization and Urban biased School;and (5) Comprehensive School. It is extremely urgent that Chinese scholars borrow these methodologies and findings to develop their own theories, especially in this historical period of overall socio economic transition in China.