The process of urbanization promotes the development of economy and society, and also brings great pressure to the environment. In order to better understand the harmonious and interactive relationship between environment and urbanization, by selecting 13 cities in Hunan province of China as cases, this paper establishes a correlation model and a comprehensive evaluation system, uses entropy weight method to weight the index, the coupling coordination model to analyze the coupling coordination relationships empirically, and gray prediction model to predict the trend and make corresponding decision recommendations. The results show with novelty that the overall performances of environment and urbanization for the 13 cities in Hunan province have similarities, the coupling coordination degrees are mild with slight fluctuations, and the next years will keep the similar trends. However, the coupling coordination development is unbalanced with the coupling degree of the east higher than that of the west; therefore, corresponding measures for better environmental governance and urban planning need to be taken in different cities.
Keywords: China; Coupling coordination model; Evaluation system; Gray GM (1,1); Information entropy weight; Prediction.