The invention discloses a transport bed coupling reaction device of a fluidized bed. The transport bed coupling reaction device comprises a wind chamber, an air distributor, a fluidized reaction bed, a center air hose, an air-lift pipe, a transition section, a transport bed, a cyclone separator, a vertical pipe and a return feeder, wherein the bottom end of the fluidized reaction bed is connected to the top end of the wind chamber; the top end of the fluidized reaction bed is connected with the transport bed through the transition section; the upper part of the transport bed is communicated with the inlet of the cyclone separator; a material outlet of the cyclone separator is connected with the inlet of the return feeder through a vertical pipe; the outlet of the return feeder is communicated with the lower part of the fluidized reaction bed; the air distributor is connected between the fluidized reaction bed and the wind chamber; the air outlet of the center air hose is arranged inside the fluidized reaction bed; the air inlet of the center air hose is arranged at the outer side of the wind chamber; the air outlet of the center air hose is opposite to the inlet of the air-lift pipe; and the outlet of the air-lift pipe is opposite to the inlet of the transport bed. Therefore, the transport bed coupling reaction device of the fluidized bed can effectively control the circulating rate of a solid material and the standing time of the material in the reactor.