The atomospheric circulution background, echo evolution, wind field structure and Doppler feature of a heavy strom were analysed with weather map, satellite cloud photograph and the 5 cm Doppler radar data. It was discussed preminarily that the occurance of the heavy strom was closed related to the geographical features of underlying surface. The research on the detective method was conducted initially for a heavy strom by means of Doppler radar. The conditions are described which is useful to hailstorm development and hail growing according to the radial divergence and wind field derived by radial velocity. The result shows that the heavy hailstorm is frequently occur in the overlapping area of the largest radial velocity and intensity.