Abstract: Based on the current state of China's tailings resources and their comprehensive utilization, the paper highlights the heap-leaching process development of our country, particularly the current state and progress in tailing leaching process, and cites its domestic and foreign industrial application cases.The paper also analyzes the advantages and disadvantages of tailing leaching processes, proposes a new thinking of tailing reservoir leaching, points out the problems in tailing reservoir leaching technology, and forecasts its future development.

Key words: Tailings, Bacteria, Heap leaching, Agitated leaching, Tailings reservoir leaching