Abstract: In the context of global climate change and accelerated urbanization, the occurrence of extreme weather leads to frequent urban floods and becomes a major natural disaster threatening public life and property. Therefore, improving the ability of cities to face storm floods is the main task in the process of urbanization. This paper takes the five districts in the main city of Kunming Yunnan province as the research area, through the relevant analysis of flood-prone points and refuge sites, based on the relevant analysis of the shortest escape path planning, health, and medical facilities distance and other factors, studies the effective flood emergency planning method, and improves the flood prevention capacity of Kunming by enhancing the resilience of urban flood. The research results show that there are still some hidden dangers of flood and waterlogging in Kunming. In recent years, with the continuous updating of urban planning, the drainage system of the main urban area of Kunming has a certain resistance to extreme rainstorms, but there is still room for improvement.

Key words: flood prevention, flood resistance, emergency planning, GIS quantitative expression