Aiming at the problems of heavy labor intensity, slow filling progress and high transportation cost of deep hole filling with traditional clay gun-clay during blasting operation, a new type of packing material with convenient transportation, the basic performance and sealing efficiency of the new packing material are studied by comparing the sealing performance of clay shot clay. The results revealed that the initial setting time and final setting time of the new packing material increase exponentially with the increase of water-cement ratio, and the reaction temperature of the material decreases with the increase of water cement ratio, the maximum reaction exothermic temperature is 65.6℃,which will not cause the change of emulsion explosive properties, within the safe range. The uniaxial compressive strength of new packing material decreases with the increase of water-cement ratio and increases with the increase of age, and its strength is much higher than that of clay mortar material. Under static load compression, the filling capacity of both the new type of hole filling material and clay mortar material increased exponentially with the increase of the filling length, but the filling effect of the new type of material was much higher than that of clay mortar material. Meanwhile, for the perforation packing process, when the packing length is fixed, the sealing ability of the material gradually increases with the age. However, the rate of the packing ability of the new packing material with the increase of the packing length is much higher than that with the age. The research results can not only provide theoretical reference for improving the sealing process of large and deep holes, but also have certain reference value in the development of new packing materials.