The work area is located in the north-central part of Laos which is covered by rainforest and close to the intersection between Truong Son North-West trend magma-tectonic belt and North-East trend Louangphabang magma-tectonic belt. The result of soil survey shows that Cu and Pb, Zn, Ag, Sn, Mo, Sb, Hg, As, Cd, Co, Bi together represent a major element association for ore deposits characterized generally by similar growth and decline trends. The metallogenic elements of Cu, Pb and Zn are mainly distributed in the contact zone between granite and carbonate, displaying obvious zoning with other coexisting or associated elements such as Mo, Sn, Bi, Ag and Cd. Cu anomalies are mainly in the inner side close to granite, whereas Pb and Zn anomalies are mostly in the outer side close to carbonate. The soil geochemical characteristics show that the ore deposits in the work area should belong to skarn type with large metallogenic potential.