A series of measuring models of provincial wide urbanization quality level indexes is constructed based on the related data of 120 example cities. Taking representative examples from each two provinces of east, middle and west areas of China as an example, their urbanization levcl is measured by the model. The results show that sustainable prosperity and coordinated development of provincial wide economy depend on internal quality of regional urbanization. In order to promote the speed and quality of provincial wide economic development of middle and west areas, the importance should be attached to secondary high capacity citiea to increase the attractive force and network expanding force of production factors of provincial wide urban system.