In the China's urbanization mode, the population urbanization lags behind the land urbanization. Population urbanization needs to attach great importance to the urban internal factors. This article embarks from the internal factors to construct urban economic general equilibrium model, and use the urban micro data to carry out the empirical analysis. The results indicates that: 1) Urban population scale is positively related to urban productivity and urban convenience, then has a negative correlation to the urban governance inefficient level and urban land acquisition cost. 2) On the whole, path for the internal factors influence on the city development is "factor -city rent level-the urban population scale". Urban productivity dominantly influences on China's urban rent levels; the influence degree of convenience for city rent level is limit. 3) The influence of urban productivity and convenience to the rent, considering 1.218 9 million and 1.68 4 million as population threshold, will be structural changed and will increase by 1.42 times and 2 times respectively. 4) As the rent level is gradually increased, the presented curve of the intensity of the productivity impact on the rent level is "S" type, intensity curve of urban convenience impact on the rent is shaped as "inverted U". 5) The Pearl River delta and Yangtze River delta city rent or city size is positively correlation to productivity obviously. The convenience of the city in metropolitan circle development was ascended with increasing latitude. At present, the main driving factor for urban development in Beijing-Tianjin-Hebei metropolis circle is convenience rather than productivity.