This paper summarizes geological characteristics, ore characteristics and variation law of the typical Hubei graphite mine (Sanchaya of graphite mining area), analyzes graphite-bearing stratum and ore-controlling structure, and points out that the deposit belongs to regional metamorphism flake crystalline graphite type. Ore bearing strata is lenticular. Due to the late fault, dikes and other damage, the orebody shape is complex. Combining with ore spots of Houshansi, Erlangmiao, Tanjiahe and Dongchonghe, the authors point out the northern Huangling faulted dome, the Quanyitang have huge prospecting potential of graphite.