Abstract: On the basis of analyzing the chemical elements ,characteristic of fractionsize,composition of ores,carriecl out the tests of milling,content of collector,particles of regrinding rougher concentrate,depressant of separating Cu and molybdenum,open and close flowsheet.Proposed the flowsheet of mixed floatation of copper and molybdeuum,regrinding rougher Concentrate,Concentration of Cu-Mo ores,last got the better index.

Key words: Cu-Mo ores, Mixed floatation, Regrinding concentrate