Abstract: Anpeng natural alkaline deposits, the deepest one in the world at present, are very difficult torecover. Borehole water- dissolving technique is viable according to the features of the deposits. A series of borehole drilling, now channels making, solid alkaline dissolving between a pair of boreholes and dissolution supporting techniques are developed in production practice.The use of formation stress data in solid deposits recovery have produced good results.Deep borehole water -dissolving technique is successful in recovery of solid alkaline deposts of low dissolubility.