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利用2006—2009年丽江市气象台的冰雹观测记录、短时强降水、民政部门提供的冰雹灾情资料和丽江CINRAD/CC雷达观测资料,对垂直累积液态水含量（Vertically Integrated Liquid Water Con-tent,VIL）进行了统计分析。结果表明,当VIL值〉5kg·m-2时将会出现强对流天气,当VIL≥21kg·m-2时预示着发生冰雹的可能性极大,是人工防雹作业启动的关键值,冰雹云中的VIL值远远大于带来短时强降水的普通对流云;在降雹前VIL值都有明显的跃增;距离雷达站较近或较远区域的VIL值会被低估,在37kg·m-2以下也会降雹,通常降雹的VIL值大都在37kg·m-2以上。“,”Using the hail observation data,short-time heavy precipitation data,hail disaster information provided from Civil Administration Department and the observational data from CINRAD/CC radar in Lijiang in 2006-2009,the vertically integrated liquid water content（VIL） was statistically analyzed.The results show that,if VIL value is greater than 5 kg·m-2,the severe convection weather will occur;if VIL value is greater than or equal 21 kg·m-2,it indicates that the possibility of hail occurrence is enormous,which start the key values of hail suppression operations.The VIL value of hail cloud is much larger than the VIL value of common convective cloud in short-time heavy rainfall.The VIL value will appear obvious abrupt before the shooting hail.Usually the VIL values of hail are more than 37 kg·m-2,but the VIL value in closer or farther region distance from the radar station will be underestimated,and the VIL value less than 37 kg·m-2 will occur shooting hail.