Abstract: Taking the Scientific Facilities Cluster Area of Songshan Lake in Dongguan City as the research area, the path based on the concept of sponge city to improve flood response capacity of small watershed in low hill cities is explored. The MIKE FLOOD system was used to analyze the impact of cluster area development on flood situation of the basin, and the promotion strategy of green regulation and storage facilities construction as the major measures and flood discharge channel transformation as the auxiliary was put forward. Taking plots, subwatersheds and watershed as control units, the types, layout and scale of green storage infrastructures at three spatial levels are carried out. Through model validation, combined with improving drainage capacity, the rainwater control system is verified to deal with once-in-100-year rainstorm. The multi-level coupling green storage infrastructurescan effectively reduce the flood peak in the basin, reduce the impact on the existing flood drainage system in the built-up area, and avoid the flood risk transferring to the downstream.