Abstract: A feldspar ore in Benxi contains limonite，illite，rutile and other mineral impurities.In order to improve the grade of feldspar，The effect successfully demonstrated to carry out the experimental study by different grinding and classification methods and mineral processing.By laboratory grinding，continuous grinding-spiral classification and continuous grinding-high frequency vibrating screen closed circuit，particle size after grinding products is minus 0.074 mm up to 52%.Removing impurities，separating feldspar and quartz by high-intensity magnetic separation (HIMS) and flotation，in turn.The method on continuous grinding-high frequency vibrating screen closed circuit can achieve the best beneficiation results.Finally，yield 50.64%，Na₂O content 11.04% and Na₂O recovery 70.25% of the feldspar concentrate can be obtained by magnetic separation and flotation.The credible results will be provided the basis data for the feldspar engineering application in the future.