The invention discloses a bulk cement tank container and a fluidized bed thereof. The fluidized bed comprises a breathable layer located at the bottom and flow guide plates located on the two sides of the breathable layer. The breathable layer is inclined from the two ends to a middle discharging opening and arranged with the width being gradually increased from the middle discharging opening to the two ends. Besides, protruded flow guide ridges are further arranged at the two ends of the bottom of the fluidized bed and used for guiding flow of cement towards the discharging opening. When the size of a discharging opening of a long-strip-shaped breathable layer in the background art is approximately equal to that of the discharging opening of the breathable layer in the scheme and the inclination angles of flow guide plates in the background art are also approximately equal to those of the flow guide plates in the scheme, the width of the breathable layer in the fluidized bed in the scheme is gradually increased from the middle to the two ends so that the space, used for loading goods, of the upper portion of the fluidized bed can be widened.