Abstract: Guangning-Luoding fault belt in Yunkai uplift,Yunkai folding belt of Ca ledonian is a gold deposit-controlling fault belt,where more than 120 gold deposits have been found.The basic geology and minerogenetic conditions of gold deposits have been paid attention since 1983 when a series of large gold deposits,such as Hetai gold depositetc.were discovered.The gold deposits are all located in Guangning-Luoding ductile shear zone and distributed strictly in its mylonite-ultramylonite zones.Hetai and Tagang gold deposits are both the Hetai-type,of which the gold deposits formed in the dilatancy period of the ductile shear zone,genetically related to Wucun ultra-unit granitic intrusive rocks.With studying on the minerogenetic conditions and model deposit,some favorable areas are delineated.One of them is Tagang target,from which an F-degree reserves of 8234 kg gold is gained.