44 reservoir earthquake sequences in the east of Chinese mainland have been collected． Among them，32 are multiple mainshock type and 12 belong to mainshock-aftershock sequences or isolated earthquakes． 5 parameters，h value，b value，energy entropy K，energy uniformity U，earthquake mode ρ，of these sequences have been calculated． With the 95% confidence level，average value of each parameter and its confidence limitation have been calculated for above two types． Statistical results show that h，U，ρ express low capability for classification of reservoir earthquake sequences． Though the mean values of b between above two types are different，data ranges get a certain overlap． The value K of above two types has a significant difference，and K = 0. 35 can be the criterion index to distinguish the multiple mainshock type sequences and ( mainshock-aftershock sequences + isolated earthquakes) ． In addition，with five parameters of different sequences as the independent variables，Fisher discriminant functions have been established for the synthetical judgment of sequence types． The results show that the classification accuracy of data is 97. 6% when all the data involved in establishing discriminant function; the classification accuracy of data is 100% when 32 groups of data involved in establishing discriminant function and 10 groups of data as extrapolation inspection． It indicates that the Fisher discriminant method has high ability on classification of the reservoir earthquake sequences．