The invention discloses a mixed reactor. The mixed reactor comprises a horizontal mixing tank, a feeding hose, a discharging hose and a reciprocating movement device, wherein two ends of the horizontal mixing tank are provided with a feeding hole and a discharging hole respectively; one end of the charging hose is connected with the charging hole of the horizontal mixing tank, and the other end ofthe feeding hose is connected with a charged material; one end of the discharging hose is connected with the discharging hole of the horizontal mixing tank, and the other end of the discharging hoseis connected with a discharged material; the reciprocating movement device comprises two parallel guide rails, springs, slide blocks or wheels, bases II, fixed seats, a driving device and a slide frame; the slide frame comprises a base I and a connection plate; the horizontal mixing tank is driven to move in a reciprocating way on the reciprocating movement device under the action of the driving device. By adopting the mixed reactor disclosed by the invention, the stability of the device is enhanced on the premise of keeping large-range efficient mixed mass transfer performance; the mixed reactor can run continuously for a long time, and has the characteristics of simple structure, easiness in operation and maintenance, running reliability and the like.