In view of urban waterlogging and non-point source pollution, the SWMM is used to establish a stormwater model for Jinfeng District of Yinchuan City from the perspective of sponge city construction. Five return periods with a design rainfall peak coefficient of 0.4 and four rainfall peak coefficients with a return period of 0.5 a constitute a total of nine rainfall events, which are adopted to assess the control effect of five LID schemes of concave green space, permeable pavement, rain garden, the combination of concave green space and permeable pavement, the combination of rain garden and permeable pavement on runoff and four pollutants. The simulation results show that the runoff control rate and pollutant load reduction rate of the five schemes decrease with the increase of the return period; concave green space has the best performance, when the return period is 0.5-5 a, the runoff control rate of each scheme is greater than 65%，and the pollutant load reduction rate is greater than 45%; when the return period is 10 a, the runoff control rate and the reduction rate of TSS, COD, TP and TN load are 61.38%，42.86%，58.23%，44.03% and 55.95%, respectively; when the return period is 0.5 a, with the increase of rainfall peak coefficient, the runoff control rate and pollutant load reduction effect of the five LID schemes show no obvious changes. The LID schemes have a good control effect on rainfall with medium and small return periods; however, the superposition effect of “1+1>2” has not been achieved, due to the interaction among various measures of the combined schemes and the impervious areas in between, and the optimal scheme is yet to be discussed in further study.