|Abstract:The north Wuyi mountain area is located in the Huaxia plate, located in the raonan depression of the fold and gully belt of the Wugongshan-Wuaijishan leading edge. It is an important polymetallic metallogenic belt in the west of the Yangzi river or in China. According to the different ore-bearing surrounding rocks, the silver deposits in the belt can be divided into four types: magmatic rock type, sedimentary rock type, metamorphic rock type and weathering crust type. Silver mineralization is mainly controlled by formation formation magmatic rock activity and tectonic action of different levels. Represented by magmatic and porphyry subtypes and metamorphic and regional metamorphic subtypes, the paper analyzes the characteristics of silver mineralization in detail with the "trinity" metallogenic theory, and summarizes the conditions of silver mineralization in the northern Wuyi mountain area. In addition, the sulfur distribution of tower, Lengshuikeng mining area delta 34 S % are between 1 ~ 5, the mean value of 3.47, S isotope composition of homogenization degree is higher, the ore-forming environment is relatively stable, close to the meteorite sulfur, sulfur from the deep crust, and the sulfur isotopic composition (34S %, 3.2 ~ 7.2, 32S / 34S, 22.060 ~ 22.148) of the ore-bearing formation of Tieshajie deposit indicates that it may come from the mantle.