It has a lot of advantages to forecast three fire accident indexs, that is, numberof accidents, number of the wounded and economical loss by the use of grey systemtheory corning out in the 1980s, which is beyond compare to other forecast methods.This paper first describes the method for forecasting fire accidents by the use of greysystem theory’ an example is given to use a microcomputer aided forecasting, whichshows application of the method.