Many years of production practice hade revealed some problems with the original sublevel caving system in the southern mineralized zone of Fengshan Copper Mine. For technological renovation, a new mining system, i.e. the sublevel stoping-and-cemented filling with crushed stone, which features novel stope structure, advanced stoping and filling technology, and better adaptability for the mines technical level, was decided to be used after the feasibility study and has offered a solution to the problems of the caving system. Industrial tests have shown promising results and indicate that the new mining system can solve the problems of originaial mining system and improve the mine productivity. The paper discusses the smooth transition of mining system for technological renovation, the mining design and the filling technology in this method.