As a renewable resource,the rational concentration and utilization of rainwater can alleviate the demand and supply of water resources.At the same time,it has certain economic benefits,and it also plays an important role in improving the urban ecological environment.The idea and thought of sponge city is advanced,continuous and effective,which is conducive to the transformation of traditional concept of urbanization and the sustainable development of modern development and construction of urban agglomeration on the basis of ensuring the safety of urban water ecosystem.This paper analyzes the concept of rainwater infiltration technology,storage technology,water quality control technology,purification technology and reuses system,and compares the main points and main functions of many kinds of rainwater resource technology.This article looks forward to its new development trend and accumulates experience for the construction of China’s sponge City,which is of great positive and practical significance for carrying out the spirit of the central city working conference and guiding the construction of sponge city in China.
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