Abstract: Hejiaya area (study area) in Southern Shaanxi is located in Mianluening triangle area，which is an important enrichment area of copper， nickel， iron， gold， manganese， zinc and other polymetallic deposits， and has good metallogenic potential. In order to clarify the prospecting direction and narrow the prospecting target area of the study area， 1∶10 000 soil geochemical surveys were carried out for Ti， V， Mn， Zn， Cu， Pb， Ni， Au and As 9 elements in the study area. Based on the statistics of the relevant parameters (average value， variation coefficient， enrichment coefficient) of the element content measured by soil geochemistry， and combined with the distribution characteristics of single element anomaly， the results show that the metallogenic potential of Ti， V， Mn， Cu， Ni， Au， As and Zn is larger than that of Pb. According to the distribution characteristics of element assemblage contrast anomaly， metallogenic geological background and metallogenic geological conditions， two prospecting targets areas are delineated in the study area. The abnormal intensity of Cu， Ni， Au， As，Mn and Zn in A prospecting target area is 137.1×10-6， 91.7×10-6， 2.45×10-9， 39.8×10-6 ， 1 512×10-6 and 128×10-6 respectively， the abnormal intensity of Ti and V in B prospecting target area is 9 810×10-6 and 259×10-6， respectively. The metallogenic potential of the prospecting target areas is analyzed by means of single element anomaly distribution characteristics，element combination contrast anomaly distribution characteristics，metallogenic geological background， metallogenic geological conditions and geophysical prospecting information. It is considered that the A prospecting target has the potential to search for magmatic molten copper-nickel and other polymetallic sulphide deposits， and the B prospecting target has the potential to search for hydrothermal altered ilmenite.

Key words: soil geochemical characteristics, contrast anomaly characteristics, prospecting target area, prospecting direction