In order to study on curing reaction kinetics of hydroxyl-terminated polybutadiene (HTPB) casting PBX explosives and ascertain curing technical parameter, adopt non-isothermal DSC method to research HTPB casting PBX explosive adhesives system curing reaction kinetics. Separately test DSC data when 5, 10, 15 and 20 K/min, and obtain the curing kinetics equation, calculate the reaction velocity constant with different temperature, and protracted the relation curve of reaction rate (da/dt)-curing degree(α). Acquire the curing temperature range of HTPB system casting curing explosive. The results show that under the condition of the same curing degree, the higher heating rate, the higher the curing reaction rate, when curing degree to 0.5, the curing reaction rate achieves to maximum. After that, it gradually decreased to zero.