Daheishan exploration area is 10 km far from the famous Laochang Ag-Pb-Zn poly-metals deposit, Lancang area, Yunnan province, China. Recently, a few Ag-Pb-Zn poly-metals ore bodies (mineralization) have been found, surrounding those ore bides Mn-bearing altered rocks are developed, which is like Fe-Mn carbonates from Laochang deposit. The Mn-bearing altered rocks are composed of pyrolusite, psilomelane, galena and calcite, and contain Pb contents of 39.53% in some part, analyzed by EPMA. Contents of Pb, Zn and Ag in Mn minerals, analyzed by ICP-MS, are 11.9%, 4.36% and 551 g/t, respectively. Mineralization element association, wall rock alterations, ore-controlled structures and country rocks of Daheishan and Laochang area are very similar. Discovery of Mn-bearing altered rocks will promote the exploration in Daheishan area.