In order to solve the problems of urban water logging,water shortage and water pollution,combined with the natural geographical conditions and the existing low-impact development facilities of the project area,the overall plan scheme for the sponge city construction of Desheng NorthRoad in Yueyang City was proposed.Collecting rainfall data of Yueyang City in recent 30a,the rainstorm in tensity formula of Yueyang City was improved,and the total annual runoff control rate was evaluated and analyzed.Theresearch results show that the absolute values of the relative errors between the value scalculated by the improved rainstorm in tensity formula and the measured values are mostly less than 5%. The actual storage volume of the sinking green space of the physical project meets the requirement of design storage volume for Yueyang City sponge city construction.The system can promote the rain water in filtration and store rain water during drought,performing the functions of "waterseepage"and"waterstorage".