This creative department provides an improved high-efficiency dissolved oxygen leveling machine, including a submerged motor, an output structure and a first air pipe, wherein the output structure is provided inside a breeding tank, and the submerged motor is provided on a first Inside the water supply pipe, the output structure is mainly composed of a first shell and a first impeller. The submersible motor drives the first impeller to rotate, and the pool water of the breeding tank is sucked into the first shell through the first water supply pipe One end of the first air pipe is connected to one side of the first water supply pipe to form a bypass. According to this, air enters the first water supply pipe through the first air pipe and is led into the output structure by the pool water. This creation can improve the utilization rate of electrical energy, increase the amount of dissolved oxygen in the pool water, and adjust the water quality of the breeding pool.本創作係提供一種改良型高效溶氧調勻機,包括一沉水馬達、一輸出構造及一第一空氣管,其中該輸出構造設於一養殖池的內部,該沉水馬達設於一第一送水管的內部,該輸出構造主要由一第一外殼及一第一葉輪構成,該沉水馬達驅動該第一葉輪旋轉,抽吸該養殖池的池水通過該第一送水管進入該第一外殼,該第一空氣管的一端與該第一送水管的一側相接形成旁通,據使空氣通過該第一空氣管進入該第一送水管,並受池水帶引進入該輸出構造。本創作可提高電能利用率、增加池水的溶氧量,並可調勻該養殖池的水質。