In this paper, analyzes the spatial differences of population urbanization in yunnan province based on the big data of population census in relevant years. The analysis results show that, in terms of province, the urbanization in remain at a higher rate in such regions of central Yunnan province, while a lower one in western, southwestern, northeastern regions; in terms of prefecture and city, the capitals of prefectures and cities develop a relatively higher urbanization rate, while a lower in the regions away from the capital. In terms of county, it develops a sharper disparity among counties.