Abstract: The SWMM low-impact development module can simulate the hydrological effects of LID facilities under rainstorm scenarios,and is widely used in urban stormwater management in China. Taking the Xinqiao River Catchment in Bao’an District,Shenzhen as an example,this paper analyzes the sensitivity of multiple output variables of the SWMM model to the typical LID facilities. The output variables of the model include evaporation,rainwater infiltration,surface runoff and peak flow. LID facilities include vegetative swales,green roofs,bio-retention cells and permeable pavements. It also compares the consistency of the results of the three global sensitivity analysis methods（Morris Method,Sobol Method and EFAST Method）. The results show that the conductivity of bio-retention cells has the most significant impact on evaporation,rainwater infiltration and surface runoff,while the vegetation-volume fraction and conductivity of bio-retention cells have the most significant influence on the peak flow. The parameter sensitivities calculated by Morris Method,Sobol Method and EFAST Method are highly consistent. The comparative analysis of the three methods can effectively improve the reliability and accuracy of the sensitivity analysis of LID facility parameters,so as to provide technical support for the optimal design of a sponge city.