Disclosed is fluidization classification equipment and a method, the device mainly comprises a settlement classification room, a central feeding casing, a central pipe, an overflow trough, an overflow collecting trough, a cone shaped inclined pore plate, a fluidization classification room, a pulsating water current generator, a coarse fraction material fluidizing room, a sensor, a programmable logic controller, a coarse fraction material discharging automatic control actuator. Firstly, water is injected into the fluidization classification room by the pulsating water current generator in the pulsating mode to form pulsation rising flow, after the classified material enters into the settlement classification room, the settlement classification is generated under the auxiliary action of the cone shaped inclined hole plate. Fine fraction material is overflowed to the overflow collecting trough from the upper end of the classification room and is discharged, the coarse fraction material and part of the fine fraction material are settled to the fluidization classification room; wherein, the fine fraction material is driven by the pulsation rising flow to overflow from the central pipe, but the coarse fraction material continues to settle downwards in the fluidization classification room, then is discharged as the coarse fraction material. The method and the structure are simple, and the particle size processing range is wide.