This chapter is devoted to discuss the theoretical and analytical details of the urbanization quality of China’s urbanization. Ways to promote urbanization quality for New Urbanization development are also discussed. By first introducing the interrelated relationships among urbanization quality, speed and level, and three-dimensional indicator system is proposed to quantify urbanization quality. The three dimensions include the economic, social, and space domains. Detailed analytical approaches are outlined. The contemporary urbanization quality spatial distribution based on the quantification efforts is presented and discussed in detail as well. In the end, five specific improving strategies, namely balancing between urbanization rate and quality, abiding by local conditions, promoting intensive instead of extensive economic structure, integrating urban and rural development and focusing on multi-dimensional quality instead of quantity, are proposed and detailed.