The dependance of mechanical properties on interfacial bonding strength of two kinds of coated single base propellants during their aging process was studied. It is concluded that the interfacial bonding strength of coated single propellant can effectively be improved by absorbing nitroglycerin(NG) and makes it non-debonding after aging under different temperature,which agrees with the requirements of low-temperature coefficient propellants to reach the optimum ballistic effect.