Abstract: Through the research on formation processes of basin, this article indicated that Fenghuoshan basin has passed four stages: basement, palaeogeom orphology basin, sedimentary basin and structural basin, formed in late Cretaceous deposit. The characteristics of status property indicated that the late Cretaceous Fenghuoshan mountains sandstones sonim rock complement and sandstone status are ore-bearing, sandstone sonim rock complement is main ore-bearing status, and have closerelation ship with coppermining. Deposit genetic analysis consider, as provenance area, up lifted a reaclose to basin and its late Triassic status and other shallow intrusive rock, provides sediment to deposit status, also provides copperto basin status deposit. In sand stones sonim rock complement and sand stone status, celadon detritus, deposit formed under reaera tion, alkali environment, become source of ore, and through last activates, relocation, concent ration, and form eddeposit, ie. the reformed lamellar copper deposit.