The invention discloses a homogenized discharging device, which is positioned at the bottom part of a storage silo and consists of two subsystems. The two subsystems are symmetrical by an X-X axis and in each subsystem, an edge chute (1), an inner chute (2) of a discharging ditch, a middle chute (3), an edge compressed air distribution pipe (4), a middle compressed air distribution pipe (5), an outlet, a bracket (7), a silo bottom delivery chute (8) and a discharging ditch (9) are arranged. The inner chute (2) of the discharging ditch is connected with the outlet; the edge chute (1) and the inner chute (2) are connected with the edge compressed air distribution pipe (4); the middle chute (3) is connected with the middle compressed air distribution pipe (5); the edge compressed air distribution pipe (4) is connected with the bracket (7) which is arranged above the discharging ditch; and the silo bottom delivery chute (8) is below the discharging ditch (9). The device can lead tothe well mixed effect of coarse and fine particles when the materials in the storage silo are taken out.