Submersible waterpower rotation flow plug aeration machine

The invention relates to a submersible waterpower rotation flow plug aeration machine. The aeration machine which comprises a motor (1) and a diversion elbow tube (10) is characterized in that: the motor (1) is connected with a bidirectional impeller (9) through a rotation shaft (4); the motor (1) drives the bidirectional impeller (9) to rotate; the bidirectional impeller (9) stretches into the diversion elbow tube (10); water inlet grids (3) are arranged between the diversion elbow tube (10) and the motor (1); the part of the diversion elbow tube (10) provided with the bidirectional impeller(9) is communicated with air through an air suction tube (8); a space made by the water inlet grids (3), the motor (1) and the diversion elbow tube (10) forms a mixed chamber (12); a tray (2) is arranged under the motor (1) and the diversion elbow tube (10); the tray (2) is connected with a fixed pedestal (5) through a rotation bearing (7); the rotation bearing (7) is sleeved with conducting sliprings (6); and the conduct