The invention discloses a method for recovering tantalum-niobium, lepidolite and feldspar powder by utilizing difficult-to-treat mine solid waste. The method is characterized in that the difficult-to-treat mine solid waste is taken as a raw material, wherein the difficult-to-treat mine solid waste is a valuable component material containing a trace of (Ta, Nb)2O5, lepidolite and feldspar, and themethod comprises the step of recovering the tantalum-niobium concentrate, the feldspar powder and the lepidolite, recovering of the tantalum-niobium concentrate is achieved though the following steps,the series-connection technology of weak magnetism, medium magnetism and strong magnetism is carried out on the difficult-to-treat mine solid waste raw material for separation of iron slag, magneticminerals and non-magnetic mineral so that the influence of iron minerals on the reselection of the tantalum-niobium ore can be eliminated, a tantalum-niobium ore waste stone raw material is obtained,the tantalum-niobium ore waste stone raw material undergoes classification by adopting a stage grinding-stage separation process method, coarse grains enter a ball mill for ore grinding, a high-frequency vibration fine sieve is adopted for carrying out intensifying classification on the fine fraction, and then the tantalum-niobium concentrate and the feldspar-lepidolite mixture with tailings beingiron-tantalum-niobium contained weak-magnetic impurities are prepared. The method has the advantages that the technology is simple, the efficiency is high, the economic and technical benefits are obvious, and the recovery rate of the tantalum-niobium and other mineral resource products is high.