Based on the fax image products from July 2001 to June 2005, JMH′s NWP precipitation forecast is verified by “the verification method of short-range and mid-range weather forecast”. It shows that the PC and TS of clear/rain forecast is best,the TS of light rainfall forecast is better, and the accuracy of heavy rainfall forecast is better but the forecasting rainfall is less than the observations. There is different forecast capacity under various synoptic systems. Moreover, the physical variables of JMH’s NWP products has well relationship with the heavy rain.