Abstract: The West Track 509 rare polymetallic deposit of Hetian region has been discovered in the periphery of Dahongliutan rare polymetallic deposits (that discovered in the late 1960s), which is a new polymetallic deposit exploration base. The orebody is occurred within the upper member of middle Bayankala Group in Late Palaeozoic-Mesozoic Bayankala margin rift belt. This deposit belongs to the granite pegmatite type. Through studying the geological characteristics and metallogenic regularity of this mining area, the ore-controlling factors and ore-prospecting clues of this deposit have been summarized, and its genesis has been discussed in this paper. Through contrasting research, it's found that it is benefit for enlarging prospecting in its depth and surrounding areas.