With the rapid development of economic and society in China，the scale and rate of urbanization is increasingly accelerating. However，the existing urban infrastructure construction is vulnerable，and the infrastructure can’t meet the demand of humans and ecosystems. The damage of urban waterlogging for many cities over the past few decades have been a critical challenge，and waterlogging phenomenon has seriously affected the further development of Chinese cities. To solve the problem caused by urban floods，engineering measures and the corresponding non-engineering measures are needed. Recently，the State Council issued a “Guiding Opinions on Promoting sponge urban construction” to state the importance of the waterlogging problem. Although，construction measures are effective in the prevention of the impact of urban stormwater，it is difficult to carry out. With the existing technology，building an effective monitoring system for urban waterlogging and alleviating the impact of urban waterlogging，become one of the develop direction of waterlogging prevention. This paper presents some opinions on urban floods mornitoring system，helpful for pre-warning of urban waterlogging prevention.