The distribution of torrential rain caused by residual vortex of typhoon Soudelor (1513) in Jiangsu Province during Aug. 10—11, 2015 was researched in this paper based on 6-hour precipitation data and NCEP/NCAR 0.25°×0.25° reanalysis data. The precipitation distribution and its relationship to wind, divergence, vorticity and moisture flux divergence were also analyzed. The results were as follows:the torrential rain was mostly located on north-east side to the lower circulation center, where convergence and positive vorticity were concentrated because of the asymmetric distribution of wind around the center. The superposition of dynamic conditions and water vapor conditions in the same area is the immediate cause of the torrential rain area located on the northeast of the circulation center. Both of the negative divergence and positive vorticity of single isobaric surface could indicate the torrential rain location. However, the coverage was varying when the isobaric surface changed. So the average value of the variables from three isobaric surfaces worked better. While Soudelor was approaching the weaterlies at mid-high latitudes, the vertical wind shear enhanced, with stable direction. The torrential rain was mostly located on down-shear left side of the shear vector between 850 hPa and 200 hPa, which could be used to locate the torrential rain caused by landed typhoon.