The Micro-Nano Aeration Machine, also known as the Micro-Nano Oxygenation Enhancer, is composed of a pump, micro-nano bubble generator, pressure gauge, aeration head, and some pipe fittings. It is a set of equipment specifically developed for river treatment and dissolved oxygen management. The principle utilizes nanotechnology to initially compress a large amount of air into a large number of micro-bubbles with a diameter of 0.25mm, under no pressure. Then, through the release system, these 0.25mm diameter micro-bubbles are highly dispersed in a semi-vacuum condition between the gas and liquid phases, producing micro-nano bubbles with a diameter less than 3μ and nano-bubbles, collectively termed micro-nano bubbles. These bubbles are then released into the water body to quickly enrich oxygen, achieving the effect of increasing dissolved oxygen in the water.