Threshold value of extreme precipitation of each station was confirmed through the percentile method based on the daily precipitation in Shandong Province from 1971 to 1999.Based on the threshold value,the 39 extreme precipitation events in Shandong Province from 2000 to 2009 were classified to five conceptual models,including upper trough,subtropical high periphery,shear line,cyclone and tropical cyclone types.Results show that the heavy rain area of the shear line,cyclone and tropical cyclone types is often larger,and that of the upper trough and subtropical high periphery types is generally scattered.There is low level jet in all five types,and the heavy rain area generally lies between 700 hPa and 850 hPa shear lines(or trough lines),at the wind speed convergence on the left side of low level jet.There is cold air in the upper trough type,the subtropical peripheral type and the shear line type 1,and the heavy rain area is located in front of 850 hPa cold temperature trough.For the five types,the mechanisms of extreme precipitation are different,and the configurations between heavy rain area and θ_se are not same.