The invention discloses a fluidization bin pump which comprises a bin pump body (1) and a mixing chamber (2) connected to the bottom of the bin pump body (1). Two first opposite side walls (21) of the mixing chamber (2) are connected with longitudinal conveying gas inlet pipe (31) and a discharging pipe (32) respectively. The bin pump is further provided with a mixing chamber fluidization device (4) transversely conveying first fluidization gas to the mixing chamber (2). By adopting the structure, the mixing chamber fluidization device transversely conveys the first fluidization gas into the mixing chamber, the fluidization effect formed when materials fall into the mixing chamber can be enhanced through the first fluidization gas, the phenomenon that materials are stacked or form an arch or the like in the mixing chamber due to the fact that the materials are too late to flow into the discharging pipe is avoided, and finally smooth discharging is ensured.