Based on the data from China's third, fourth and fifth national census, this study analyses the spatial change of the total population, native population and transient population in Guangzhou. It is exposed that since 1980s Guangzhou has been in a stage that urbanization and suburbanization exist together. On one hand, the total population of the metropolis has increased rapidly because of the entrance of a large quantity of transient population; on the other hand suburbanization has started in the central city since 1990s. Therefore, it points out that both urbanization and suburbanization ha...