The invention discloses a preparation device and preparation method of heterogeneous composite powder based on jetting-blowing fluidization, and belongs to the technical field of powder metallurgy. The preparation device of the heterogeneous composite powder based on the jetting-blowing fluidization comprises a furnace body, a hollow pipe, a crucible and a jetting-blowing mechanism, wherein a heating body is arranged inside the furnace body, the hollow pipe penetrates through the side wall of the furnace body, one end of the hollow pipe is connected with the jetting-blowing mechanism through an air inlet pipe, and the other end of the hollow pipe is communicated with the bottom of the crucible. The preparation device of the heterogeneous composite powder based on the jetting-blowing fluidization has the advantages of being simple in structure, convenient to use and high in efficiency, making the powder maintain in a fluidized state during the whole reaction process, and preventing a sintering solidification circumstance from occurring, and the prepared powder has the advantages of being evenly diffused in heterogeneous structure, small in property difference and the like.