Urbanization determines the supply of urban and rural labor markets and has an important impact on the economic development of the society. The study put forward the concepts of urbanization rate without rural economic linkages, urbanization rate based on place of residence and urbanization rate based on occupation, and constructed a model of urbanization economic dynamics to predict the long-term trend of urbanization. The study found that if there is an urban-rural income gap, urbanization will continue; if the urban-rural income gap gets large, the urbanization process will be accelerated; if urban-rural income equalization is achieved, urbanization will be terminated, and the urbanization achieved at this time is long-term urbanization. This analysis was validated using data of China, the United States, Japan and South Korea. To improve the speed and quality of urbanization in China, the study suggests that the relevant system needs to be further reformed so that agriculture is mainly run by selfemployed farmers on a large scale, and urban residents who have left the countryside are separated from the rural economy.