Abstract: This paper describes the preliminary results of observation to the thunderstorm and lightning in Dongxiang,Gansu with apparatus such as weather radar,field mill electric change meter and VHF field-strenrah meter.Data analysis shows that there are often strong VHF radiations during lightning discharge process.A layer of positive charge often exists in the lower region of thunderstorms and most of cloud flashes take place between this layer and negafive charge region above.