Abstract: The response of a high energy modified double-based propellant to shcok loading is studied and compared to that of the high explosives . The initiation , detonation , chemical reaction induced by shock waves and the shock growth of the propellant seem to be similar to that of heterogeneous high explosives . The reactions of the propellant components , HMX , NC , NG and AP , seem to carry on independently .The critical initiation pressure of the propellant is 1.1GPa, being rather hazardous .