Based on the analysis and comparison of the energy level of binders and propellants, as well as the theoretical combustion products of binders.It was predicted that NEPE combustion characteristics would behave like both AP-HMX-CMDB and AP-HMX-HTPB, Accordingly a preliminary study was made on the effect of the burning rate catalysts used effectively in CMDB on the NEPE burning rate and pressure exponent.It was found that addition of burning rate catalyst and reduction of AP particle size significantly improved thecombustion characteristics of the propellant in the pressure range of 4~9MPa.The burning rate catalyst exerted mainly the catalytical effect on the buning rate at relatively low pressures,while increasing only the content of burning rate cataltst could not remarkably lead to the increase of the burning rate.