Abstract: No570 deposit, occurred in Mesozoic continental felsic volcanic rocks, is controlled by ctryproexplosive clastic rocks and characteristic of U-Ag-Mo paragenesis. The study of fluid inclusion showed that the ore-forming temperature is 150-180℃, which belongs to the hydrothermal deposit of low to moderate temperatures; the fluid is enriched in HCO3-, F-, SO4^2-, K+, Na+, but has comparative low salinity (1.25-1.48% NaCl equiv.); and uranium was migrated mainly as forms of UO2 (CO3)3^2-, UO2(CO3)3^4-, UO2F4^2-, UO2F3- in the ore-forming solution. According to hydrogen and oxygen isotope studies, the metallogenic enrichment of or materials in No570 deposit has close relationship to the mixing of two different solutions (volcanic hydrothermal solution and meteoric water). The geochemistry of Pb, S, C isotopes and trace elements from country rocks indicates that the ore-forming material of No570 deposit has multiple sources and in close relationship with basement rocks. It is determined that uranium is contributed mainly by the Gaxi granite body and felsic volcanic rocks of the Nanyuan Formation, molybdenum is derived from volcanogenic hydrothermal solution, but silver is mainly from metamorphic rocks of the Mayuan Group, This paper suggests a metallogenic model of multisourced tectonomagmatic activation for No570 deposit.