The stockpilings of Pangang Majiatian tailing mainly came from Midi concentrator. So far, the stockpilings exceeded 125000000 T. According to the current producing capacity of Midi concentrator, the stock will reach 180000000T in 2020. In order to improve the comprehensive recovery of mineral resources,the tailing stockpilings need to be turned and have the depth of recycling. The key problems need to be solved including, the safety measures of tailings reservoir and the new facilities, efficiency and practice, economic and reasonable way for ore dressing process and plant location, economic and reasonable treatment scheme. Aimed at the above problems, the discussion was carried on to seek the best solution.