The Micro-Nano Aerator, also known as the Micro-Nano Oxygenation Enhancer, consists of a pump, micro-nano bubble generator, pressure gauge, aeration head, and some pipeline fittings. It is a set of equipment specifically developed for river management and dissolved oxygen treatment. The principle utilizes nanotechnology to initially compress a large amount of air into numerous micro-bubbles with a diameter of 0.25mm, under no pressure. Then, by using the release system, these 0.25mm diameter micro-bubbles are highly dispersed in a semi-vacuum state between the gas and liquid phases, 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.