The solubility of CL－20 and a number of polymer binders were investigated,and suitable solvents and polymer binders were selected for coating and desensitization of CL－20 with water－suspension coating method. The impact and friction sensitivity test results indicate that the “Estane－G” composite consisting of polymer Estane and graphite,and 20% TATB with small particle size (less than 1 μm) in the compositions is effective on coating and desensitization of CL－20,and the explosion temperature test results indicate that the coating do not affect the thermal sensitivity of CL－20.