In order to establish an accurate meteorological forecasting and alarming model against geological dis-asters in Lingshan County, ten factors to control and influence the geological disasters are selected to be the e-valuation indices according to latest survey data in the county .Every factor is evaluated and weighted by com-bined the Analytic Hierarchy Process (AHP) with the weighting method.Prone areas of geological disasters in Lingshan County are divided by ArcGIS and the method of weighting into the following areas: safe area, low risk area, medium risk area and high risk area based on the susceptibility of geological disaster in the county . According to the correlation curve between rainfall intensity on the same day and the frequency of occurrence of geological disasters, two threshold values of rainfall are determined as 80 mm and 140 mm.Information method is used and the meteorological forecasting and alarming model is established for geological disasters .Five grades of meteorological forecasting and alarming are classified.