In order to explore the development ideas for insensitive munition (IM) propellant and technical ways for IM characteristics of hydroxyl-terminated polyether(HTPE) propellant, the domestic and foreign researches on IM propellant and IM properties of HTPE propellant are overviewed, the development trend of IM propellant in the future and the response mechanism of HTPE propellant under IM evaluation tests. The result shows that the research can provide theoretical support for the develpment of propellant.