Using the Fengdu county surface data from 2005-2014、NCEPreanalysis data and the data from balloons etc in this article.analysis the character of the hail,short-time heavy rain and gale.resulting the spatio-temporal Distribution characteristics of the three strong convective weather.In order to provide the information for the convective warning .IT is concluded that the differences from the three kinds of strong convective weather are followings：hail usually happened from March to August，and May to September is the period time of short-time heavy rain，and the May to August is the frequent period of gale. Hail mainly occurs in fengdu county in the south of the Qiyue mountains and the north of the Jiangjia、Huangcao mountains nearby. By counting the environment index of the three kind of convective weather,the resulting show the difference:PWV,?T500-T850、K、Li index、Relative humidity, Divergence field distribution has the big different in hail ,short-time heavy rain and gale.especially the value of ?T500-T850，the figure has 5℃ between hail and short-time heavy rain.But the gale ‘s value is between hail and short-time heavy rain.On the distribution of water vapour in the atmosphere, the PWV in the atmosphere of short-time heavy rain is 58mm, about 10mm more than the hail value and 14mm more than the gale value.The atmosphere in all layer are full of water vapour in short-time heavy rain，but the hail and gale has a mount of water vapor Close to the ground，and the high level is just about 40-50%。Convection index the K and LI is well Indicates the Convection weather，the average of k index in short-time heavy rain is about 39.8℃，respectively 1.6℃ and 3℃more than gale and hail.The Atmospheric circulation located in of short-time heavy precipitation is mostly below 600hPa, while the hail is around 300hPA and the gale is around 400hPa.