The utility model discloses a fluidizing, catalyzing and inverting stripper which improves a baffle plate structure of existing strippers. In the utility model, a distribution disc 8 is arranged under holes 6 of a baffle plate 5 and an outer ring baffle plate 7, unwards flowing solid phase catalyst flows into the distribution disc through the holes 6, reaches a position under the baffle plates after secondary distribution by the distribution disc, fills cavities under the baffle plates and increases steam solid contact area, and besides, flared bodies and inclination angles of baffle plates are improved. The utility model can be used as a stripper for various fluidizing, catalyzing and inverting devices for eliminating oil gas or smoke gas brought by catalyst and has higher steam solid mass transfer rate and stripping efficiency.