Abstract: Jiurui high ore concentration area is the most important copper high ore concentration area in the middle and lower Yangtze reaches metallogenic belt.Based on the latest exploration and research results,this paper conducts a comprehensive study of the Yanshannian syntectic intermediate-acid magmatite mineralization characteristics signs closely related to the endogenic metallic deposits in the area,finding that the magmatite mineralization characteristics of the two different output forms of the dyke-like and stock-like rock masses are obviously different,in that the deposits related to the stock-like magmatite are of medium-large scale and above,and the minerals are mainly copper,molybdenum(tungsten);the homogenization pressure is relatively low,and the salinity is high;there are many types of mineral fluid inclusions,and the ore-forming fluid has undergone multiple boiling or immiscibility;the wall rock alteration is characterized by centralized alteration zoning.The deposits related to the dyke-like magmatite are mostly medium scale and below,and the minerals are mainly copper and gold;the metallogenic homogenization pressure is relatively high,and the salinity is low;the boiling or immiscibility of ore-forming fluids is not well deve-loped,and the alteration zoning is not obvious,but banded silicified or siliceous rocks often appear.