Abstract: Wenyu gold deposit in Henan Province is a large scale auriferous quartz type gold-lead deoposit,of which Vein No.505 is the major mined lode.The spatial occurence of the vein is strictly controlled by an E-W stricking brittle-ductile shear belt.The mineralization process can be divided into 4 stages, which are:(Ⅰ)pyrite-quartz stage,(Ⅱ)quartz-pyrite stage,(Ⅲ)quartz-polymetallic sulfide stage and (Ⅳ)quartz-carbonate stage.The thickness of ore body and grade ofore are controlled by the distribution of auriferous quartz and the superimposed development of the main mineralization stages of Ⅱand Ⅲcollectively.The structure controlling on gold mineralization shows as follow:1)Affected by the attitude and moving way of ore-controlling fault,the auriferous quartz body mainly occures at the positions where the strike of the fault is less than 90° and the dip angle is less than 50°.2)TheⅡand Ⅲ mineralization stages mainly superimpose at the positions where the strike of the fault is 85~90° and the dip angle is 45~50°.3)The prominent zones by shape of the lying wall of the ore-controlling fault are the positions where the ore shoots locate.And 4)controlled by the extent of the prominent zones of the lying wall of the ore-controlling fault,the ore shoots in Vein No.505 incline west in space.