Micro-nano aeration machines, also known as micro-nano oxygenation machines, consist of a pump, micro-nano bubble generator, pressure gauge, aeration head, and some pipe fittings. They are 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 0.25mm diameter non-pressurized microbubbles. Then, through the release system, these 0.25mm diameter non-pressurized microbubbles are highly dispersed in a semi-vacuum state, producing micro-nano bubbles with a diameter less than 3μ and nano-bubbles, collectively referred to as micro-nano bubbles. These bubbles are then released into the water to rapidly oxygenate it, achieving the effect of increasing dissolved oxygen in the water.