The invention relates to the technical field of drying equipment, in particular to a novel powder fluidized bed drying machine comprising a shell. The shell is composed of an upper shell body and a lower shell body of a split structure, and the upper shell body and the lower shell body are connected through a quick-release structure. The side wall of the upper shell body is provided with a feed inlet, the upper surface of the upper shell body is provided with an air outlet, and the side wall of the lower shell body is provided with a discharge outlet. A filter cavity, a fluidization cavity and an air cavity are distributed in a cavity formed by the upper shell body and the lower shell body from top to bottom, and the fluidization cavity and the air cavity are separated through an air distribution plate. Multiple fluidized bed bodies are disposed inside the fluidization cavity. The novel powder fluidized bed drying machine is simple in structure, the multilayer fluidized bed structure is adopted, materials and hot air conduct heat exchange for multiple times, heat energy is reutilized, and energy consumption is lowered; air passes through screens prior to passing through the fluidized bed bodies, air flow distribution can be improved, and better drying effect is obtained through more uniform air flow distribution of the fluidized bed bodies.