Based on the conventional observation data, surface regional auto weather station data, satellite data and the NCEP reanalysis data, three heavy rainfall weather processes were analyzed which happened in June, 2010, June, 2012 and June, 2015 in Huaihua, Hunan Province. The results are shown: 1. Three processes were all typical vortex and cold trough heavy rainfall, the precipitation distribution was around the vortex southeast side and its eastward wind shear, and for those processes whose vortex is moving eastwards along wind shear, the rainfall distribution is on the vortex moving path. 2. Meso-scale vortex or convergence center in the lower level is the direct system causing heavy rainfall, and its development and movement have an influence on the precipitation area and duration which reflect on the satellite is the growing and decaying of meso-scale cloud. 3. Bay of Bengal and South Chian Sea is the vapor source of heavy rainfall in Huaihua. Heavy rainfall happened in the unstable stratification of high temperature and high moisture and the area of strong vapor convergence. Heavy precipitation is the result of whole layer water vapor flux and vapor convergence, when both of them enhanced to extreme values, precipitation increased too, when the their enhancements are not synchronized, we cannot use single factor to estimate the precipitation, but with comprehensive consideration. 4. Three processes all happened under the coupling structure of positive vorticity, negative divergence in the lower layer and negative vorticity, positive divergence in the upper layer.