Depth-adjustable oxygenation device

The invention discloses a depth-adjustable oxygenation device. The depth-adjustable oxygenation device comprises an oxygenation pipe and an adjusting assembly, a plurality of through holes are formed in the oxygenation pipe in the axial direction; the adjusting assembly comprises a sealing rod and air cylinders, the multiple air cylinders are arranged in the oxygenation pipe, and the sealing rod is connected with the air cylinders and can be inserted into and block the through hole. By using the depth-adjustable oxygenation device, the aeration area can be adjusted and controlled by controlling the sealing rods at different height positions to open or close the through holes, so that the effect of directionally supplying oxygen to water areas with different depths in different areas is achieved.