Based on the Xband phasedarray Doppler radar, Sband dualpolarization radar (SPOL) and conventional surface and upperair data, we analyzed the characteristics of a severe convective process in South China that happened on 3 June 2016. The results are summarized as follows. (1) The intensity, velocity and phase distribution of supercells can be observed by Doppler parameters and dualpolarization parameters of SPOL. The formation of hook echo is affected by the influx and outflow of supercells. (2) XPAR can obtain spatiotemporal resolution much higher than observation data of SPOL, which can make up for the serious shortage of elevation layer. The complete vertical structure of super cells can be observed and the shortterm evolution of supercells can be more accurately described. (3) Hypercubes near the hook echo brought cooling temperature, strong winds and heavy precipitation to the surface, and the areas with the supercells passing through had significant drop in temperature and strong winds. The results show that phasedarray radar and dualpolarization radar are more helpful to understand the evolution of supercells.