In this paper

107 earthquakes of M≥5.0 are collected that occurred in Mainland China. Based on different types of data of these events including earthquake sequences

stress drop and seismic moment

we discussed the intensity of apparent stresses of different earthquakes classified into two classes according to earthquake fault characteristics and earthquake types. The results show that the intensity of earthquake apparent stress is related to the earthquake fault characteristic and earthquake type. The intensity of apparent stress of single strike-slip earthquake is higher than that of non-strike-slip earthquake. Among strike-slip faults

intensity of apparent stress of single-shock type earthquake is lower than that of multiple-shock type earthquake. For non-strike-slip type earthquake

the situation is more complicated

and there are single-shock earthquake of high apparent stress

and also multiple-shock earthquake of low apparent stress. In order to rapidly judge earthquake type using the information of strong earthquake itself

we calculated Y

the ratio of static stress drop to dynamic stress drop

of 19 strong earthquakes. Finally it is found that when Y is higher than 0.2

the strong earthquake may be single-shock earthquake or main shock-aftershock type earthquake with less aftershocks

and when Y is lower than 0.2

the strong earthquake may be multiple-shock earthquakes or main shock-aftershock type earthquake with abundant strong aftershocks.