Based on one-dimensional shock wave and thermodynamics and physical chemistry, the model of explosive temperature of reactive fragment and reaction material group assignment composition was established. The explosive temperature change of PTFE/Al and PTFE/Ti reactive fragment with the reaction material quality ratio was analyzed. There is a maximum value of explosive temperature, PTFE/Ti reactive fragment's is 1 100 °C higher than PTFE/Al's, when certain content of the metal powder, before which the explosive temperature is increasing and after which the explosive temperature is decreasing. Compared with previous damage effect test of compound reactive fragment on the steel target, it can be supposed that the higher explosive temperature is, the better its blasting is. It is suggested that the established model and research method can be applied to dynamic properties research of other reactive fragment such as impact reaction characteristics and so on.