With disaster prevention and risk reduction as the engineering background, taking the total annual runoff control rate and total pollutant control rate as the overall target, the reconstruction plan was made for the sponge transformation of the park. The sponge transformation mainly focuses on low -impact development and transformation. Using Infoworks ICM software to construct traditional development model and low impact development (LID) model for parks, for the LID facility module in ICM, layout and planning for LID facility design in the model. The simulation results show that LID facilities of certain scale (permeable pavement, grass ditch， rainwater garden and green roof account for about 9.8%, 1.6%, 4.7% and 0.2% of the total area of the park respectively, with a total of about 16.3%) are applied in the park, the park can achieve the desired objectives; compared with the traditional model, the addition of LID effectively improves the annual runoff and pollution control rates.