[Objective] The regulation and control benefits of rainfall-runoff after sponge reconstruction in residential districts were calculated to provide a technical reference for sponge city construction.[Methods] The interception capacity of rainfall-runoff and the utilization rate of low impact development (LID) facilities was calculated under different rainfall intensities

based on LID facilities in a residential district of Guyuan City

Ningxia Hui Autonomous Region. The total annual rainfall-runoff interception capacity and the rainfall-runoff interception capacity of each LID were measured using the rainfall data of Guyuan City from 2004 to 2014. The annual rainfall-runoff control benefit of each LID was determined using the calculated rainfall-runoff interception and storage capacity data of LID facilities

the resource and environment economics

the annual regulation benefit

and the unilateral rainfall-runoff control benefit.[Results] After sponge reconstruction

the average annual rainfall-runoff storage increased by 11 568 m3

the benefit was 111 302 yuan per year

and the benefit of unilateral rainfall-runoff control was 9.62 yuan/m3. The average annual benefits for each LID facility were 45 273 yuan per year for a rain water garden

27 103 yuan per year for a sunken green space

6 654 yuan per year for a rain water bucket

and 32 272 yuan per year for a rain pool.[Conclusion] Sponge reconstruction in residential areas can effectively control the external displacement of rainfall-runoff and improve the total annual runoff control rate

which has economic

environmental

and social benefits.