Kaihuashan silver polymetallic deposit in Fengzhen town in Inner Mongolia occurred in fractural zones of Archean Jining group. It is a small type silver polymetallic deposit .Three ore deposits have been exposed totally with small scale, simple ore structure and stable ore grades. The magmatic hydrothermal and fault fracture zones play important roles in ore formation and control. Iris medium and low temperature magmatic hydrothermal type deposit.