Abstract: Pingran area is located in the Ma Jiang-Xam Nua island arc metallogenic belt, and the metallogenic condition of magmatic copper-nickel sulfide deposits is excellent. 1 ∶ 50 000 stream sediment survey around the Pingran area of Laos revealed an anomaly combination of multiple elements dominated by Cu, Ni and Co accompanied by Cr, V and Ti, reflecting the metallogenic specialization of the basic-ultrabasic rocks. The authors used the method of factor analysis and clustering to analyze the data of 1:50000 stream sedi-ment survey in Pingran area,and made a geological interpretation of the deposit. It is suggested that the anomalies from the geochemical survey are associated with the mineralization along a series of NW-trending fracture zones and the basic-ultrabasic rocks. Cluster analy-sis of the stream sediment geochemical data of Pingran area shows that fifteen kinds of trace elements can be grouped into three types, i.e. Ni, Cr, Cu, V, Co, Zn and Ti belong to the first type,As, Sb and Pb to the second type,and the rest to the third type. The first type reflects elemental distribution, accumulation characteristics and related mineralization information of mafic-ultramafic rocks, whereas the second type reflects the combination of ore-forming elements at low-medium temperature. The primary factor of stream sedi-ment geochemical element F1 may represent Cu, Ni and Co mineralization of mafic-ultramafic rocks. There are 607 samples with the factor F1 scores higher than 2 among all the 3806 samples from Pingran area. Distribution characteristics of the factor F1 score anoma-lies are roughly consistent with those of Au,As and Cu anomalies in Pingran area. Thus,the overlapped portion between the Cu, Ni and Co anomaly area and the area where factor F1 scores are higher than 2 should be the key ore-prospecting target dominated by Cu, Ni and Co.