The invention provides a bottom-discharge box, relates to the technical field of discharge boxes, and solves the technical problems that the conventional discharge box is imperfect and liable to discharge unexpectedly. The upper end of a box body of the bottom-discharge box is open, a movable bottom plate is arranged at the lower end of the box body and used for sealing the bottom of the box body, and two locks are arranged at two rear side bottom corners of the box body respectively and used for locking the bottom plate. The front side edge of the bottom plate is hinged with the front side bottom edge of the box body, two lock holes are formed at the two rear side corners of the bottom plate respectively and in the positions corresponding to the two locks that are arranged at the two rear side bottom corners of the box body respectively. The two locks are fixedly interconnected through a linkage rod, a movable pull handle is arranged on the box body and used for unlocking the bottom plate, one end of the movable pull handle extends out of the box body and the other end of the box body is fixedly connected with the linkage rod through a pull rod, a spring is sleeved on the pull rod, and one end of the spring is butted against the box body and the other end of the spring is butted against the linkage rod. The bottom-discharge box provided by the invention can prevent unexpected discharge.