General slope mass rating(GSMR) method is proposed. The continuous modification of discrete value which is composed of intact rock strength and rock quality designation and joint spacing

the modification of the relation between joint and slope

the excavation method

the inclination between joint plane and applied force

the state of artificial slope

the seism stress

the slope height and the revised coefficient F3 of Romana are considered. Because of this considering

rock mass mechanical parameters are determined by using the GSMR method

which is a workable method in engineering. That the discrete value can be replaced by the continuous modification to calculate the GSMR value is proved; and the rock mass mechanical parameters which are needed by the analysis for the slope stability are determined by using the GSMR method.