The urbanization rate of Beijing permanent resident population was 86.6% in 2019，which has reached a high level. Due to profound systems，historical factors and development models，the urbanization level of Beijing actually has the characteristics of “high quantity and low quality”，which manifested a large number of non-registered residents among the permanent residents. Starting from the essence of the urbanization，this paper studied urbanization in Beijing，analyzed its current problems and reasons. It is pointed out that Beijing should face the fact of its highly developed urban economy，and take the lead in exploring the equal interaction mechanism of urban and rural elements based on the development of urban-rural integration. With improving the economic carrying capacity and public services of small towns，constructing transportation system，playing ecological role of agriculture，it will explore to realize “macrocosm urbanization”.