Abstract: By using conventional meteorological data, automatic station data and doppler radar observation data, a strong convective weather were analysed at night on July 28, 2014 to early in the morning of July 29 in the middle part of ordos city. The results showed： the severe convective weather occurred in the interaction between the upper trough and low-rise shear, better moisture conditions and convective instability conditions promoted development of strong convective weather process. The results showed through the analysis of Doppler radar characteristic： the strong convective weather appeared more than 58 dbz strong echo area and more than 63 dbz strong echo center in combination reflectivity CR figure; the radial velocity V figure showed cyclonic convergence in the the low-level formation of severe convective, upwind in the middle-low formation of severe convective, the anticyclonic divergence in a high level formation of severe convective; Strong echo area and VIL center had a good corresponding relation on the location; the change of the VIL provided effective information to judge the growth of the storm of hail and drop zone; The hail index was of great help to forecast the prohability of hail and drop zone; Storm track index had good pointing meaning for judgment to the direction and orientation of severe convective system.