In order to deal with the impact of climate change on urban rainwater drainage system, this work provides a reference for the engineering designer. By means of the methods of literature review, this paper analyzes the latest research results from the aspects of the urban storm distribution law, the process of urbanization, the simulation of storm water pipe network and so on. It is proposed that the model for urban rainwater drainage system should be constructed with the consideration of stochastic, fuzzy, interval, rough and so on. The research results show that the original law of urban rainwater drainage system has been changed with the climate changes, and there is great uncertainty that should be solved by the research