In order to master the development quality of new urbanization in all cities and prefectures in Hunan Province, the index system was constructed by constructing such five aspects as economic urbanization, life urbanization, social urbanization, ecological environment urbanization and urban-rural integration, and the TOPSIS model based on entropy weight method was applied. The comprehensive level of new urbanization development quality of 14 cities in Hunan Province was measured. The results show that only the provincial capital Changsha has a relatively high level of new urbanization, while the other cities and prefectures have generally low levels of new urbanization, and the regional development imbalance is significant. According to the method of cluster analysis, 14 cities and prefectures in Hunan Province are divided into three categories, the first category is Changsha, the second category is Zhuzhou and Xiangtan, and the third category is 11 cities and prefectures such as Yueyang, Changde, and Shaoyang. Based on the analysis results of the factors affecting the development level of the new urbanization, suggestions are put forward to promote high-quality development of new urbanization: equity should be taken into consideration to promote the coordinated development of cities and prefectures in the province ; the overall development of the economic zone in the middle reaches of the Yangtze River should be integrated to promote sustained economic growth; the income of rural residents should be improved to balance urban and rural development; the prevention and control of environmental pollution should be increased to promote the construction of ecological civilization.