Abstract: By use of correlation analysis of the daily data of fire and meteorological conditions from 1980 to 1991, it is found that fire occurring frequency (Y) has a negative correlation with relative humidity, a positive correlation with daily range of air temperature, continuous arid days and maximum wind speed, and no relation with rainfall on the same day. The synthetic, multifactors forecast equations are set up by using weighting coefficient method and the reasonable fire weather grade standards are built up for each season, respectively. By the verifications of fitting and experimental prediction, the results show that the fire hazard events with mid and high grades would occur seldom (few days), but there is high generality for fire