Abstract: The ore-bearing strata of the Tumuya Silver Polymetallic Deposit are mainly the Xiaozhai Formation of the Erlangping Group.The output of its ore bodies is strictly controlled by compression and torsion fractures,and the alteration zone is obvious.The mineralization of the mining area can be divided into 3 stages.The S isotope fractionation of the ore basically reaches a balance,which is a mixed source of metamorphic dehydrated sulfur and crust-derived acid magmatic sulfur in the Erlangping Group strata.The lead source material has a high degree of maturity and the characteristics of a lead source in the upper crust.The ore-forming materials and ore-forming fluids mainly originate from the Xiaozhai Formation.The deposit was formed under the meso-temperature environment of the Mesozoic Era and transformed by collisional orogeny in the later period.Metamorphism has important and positive significance for mineralization.The Tumuya Silver Polymetallic Deposit should be a fault-controlled orogenic mesothermal hydrothermal silver polymetallic deposit.