Abstract: This study sorts out the development course of sponge city policies in China in order to better promote the construction and implementation of sponge cities and accelerate the development of the urban stormwater management mode and urban ecological environment. It takes sponge cities in South China as the main research objects, and professional experts related to four types of sponge cities as the respondents, to conduct a questionnaire survey from the aspects of environmental crisis, sense of responsibility and belonging, merit recognition, policy support, and sponge city construction measures. Firstly, it establishes the "crisis-behavior" theoretical model and applies the structural equation analysis method to reveal the mathematical relationship between the awareness of relevant professionals on environmental issues and the degree of advocacy of the sponge policies. Secondly, it analyzes suitable measures for the construction of sponge cities in South China, concluding that the “vertical design combined with natural waterway” has the highest regional specificity. Based on the present situation of regional development and the characteristics of location environment, it puts forward the formulation method of measures that can be integrated into the policies, providing the basis and reference for the formulation of relevant policies and implementation strategies.