Among all the reasons, urban storm flooding problem urges the process of urban water cycle research even more. In thispaper, we built a high-resolution hydrological model of Tsinghua University based on SWMM, and simulated two rainfall events (10/ 5/2015 and 21/7/2012) with the observed precipitation data. The model was calibrated and validated with road water-logging depth. The results indicate that: (1) the runoff processes are similar even though the perviousness of sub -catchments are different; (2) the station has a remarkable effect on flood peak and road water-logging reduction; (3) water-logging depth of road responses sensitively to rainfall intensity, and showing 0.5~1h’s time lag in the low-intensity rain events.