Two kinds of mixture explosive containing 10%-20% RDX and 40% RDX respectively were prepared by cocrystallization of RDX and urea nitrate obtained with the reaction of the urea and waste nitric acid in RDX plants.The properties of two explosive were measured. Results show that the explosion properties of explosive containing 10%-20% RDX excel those of nitrolite,emulsive and mealiness explosive, and the explosion properties of explosive containing 40% RDX are same as those of TNT. The cocrystallization technology of the explosive is simple and green.