The invention relates to a segmented circulation reactor with a flow guiding component on the inner wall of an outer barrel. The segmented circulation reactor mainly comprises an outer barrel (1), a primary inner barrel (2), a secondary inner barrel (3), a gas distributor (4), a liquid nozzle (5), a flow guiding component (6), an upper discharge hole (7) and a lower discharge hole (8). The segmented circulation reactor is characterized in that at least one flow guiding component (6) is continuously or discontinuously distributed along the circumferential direction of the inner wall of the outer barrel (1) of the reactor; and the flow guiding component (6) is welded on the inner wall of the outer barrel (1), the cross section of the flow guiding component is a trapezoid or a triangle, and the flow guiding component is arranged at a central position in axial height of a circular seam. The segmented circulation reactor with the flow guiding component on the inner wall of the outer barrel provided by the invention has the advantages that a great quantity of fluids smoothly enter the inner barrels of the reactor from the circular seam or small holes under the restriction of the flow guiding component (6), and multiple fluid circulations are formed in the reactor, so that full contact between a gas phase and a liquid phase can be facilitated; and the segmented circulation reactor with the flow guiding component on the inner wall of the outer barrel provided is simple in structure and easy to use, has better mass and heat transfer performance and is applicable to an occasion with large height-diameter ratio.