Abstarct: Due to completion of high grade reserves and increase of lead price as a result of increase of industries demand for lead, low grade reserves of lead become more favorable. One of these low grade lead reserves is Changarze lead mine which is located in Natanz city of Iran. In this study, possibility of concentration of this ore was examined and lastly suitable methods for this aim were studied. For concentrating of lead ores and due to physical and mineralogical characteristics, gravity concentration and flotation was accepted and used as the most efficient methods. Jig and shaking table was used for gravity concentration tests. By mineralogical tests, lead minerals of ore were recognized as galena and cerussite. Moreover, 85-90% of galena was liberated in 212 microns. According to atomic absorption analyses, the ore contained 2.33% Pb. Gigging test results were not suitable, as the highest obtained grade was about 33% which is far from acceptable grade. In shaking table, some rather good results were gained: after one stage of cleaning, grade of concentrate reached to 45%. So grade of 50% and more would be possible after 2 stages of cleaning. In flotation tests, using KAX as collector, Na2S as sulfidization reagent, MIBC as frother and sodium silicate as dispersion reagent, optimum parameters were investigated. After roughing and three stages of cleaning, a concentrate of nearly 70% Pb was obtained.