The utility model discloses a wet metallurgy reactor capable of improving the immersion ratio of a target element. The wet metallurgy reactor comprises a reactor main body and a stirring device; top gas inlet pipes extending to the internal lower end of the reactor main body are distributed on the top of the reactor main body, bottom gas inlets are distributed in the bottom of the reactor main body, and side surface gas inlets are distributed in the side surface of the reactor main body. In the experimental study of wet metallurgy and the industrial production process, due to high viscosity and low density of a reaction medium and high density of metal minerals, a solid is very likely to sink to the bottom, which results in insufficient gas-liquid-solid three-phase contact and reduction of the metal mineral conversion rate. The wet metallurgy reactor is designed to enhance the gas-liquid-solid three-phase mixed mass transfer effect, and is capable of realizing a higher immersion ratio of the target element; the immersion ratio is improved by 10%-50% in contrast with a traditional process.