The Diaoquan silver-copper deposit is a skarn deposit. The ore body occurrence in the annular skarn zone that is around the neutral-acid rock mass (granite porphyry,quartz porphyry and biotite quartz monzonite). In this paper, the systematic study of trace element geochemical is carried out on this deposit, in order to determine the relationship between neutral-acid rock mass and ore. Neutral-acid rock mass, skarn and marble are resembled in the REE geochemical features, which is presented by low ΣREE, and they are enriched in LREE, and δEu is negative anomalies. Neutral-acid rock mass enrich W,Ag,Cu and Mo. The geochemical characteristics of mineralization elements in skarn and marble are similar to neutral-acid rock mass. Neutral-acid rock mass enriches lithophile element Rb, depleted in lithophile element Sr, which show that the rock mass has been contaminated by crust. The geochemical characteristics of trace elements in skarn and rock mass are similar. The comprehensive analysis suggests that the mineralization has been influenced by magmatism of neutral-acid rock mass, and rock mass is the metallogenic material carriers, and this skarn deposit is closely associated with Neutral-Acid rock mass.