A kind of aquaculture pond aerator of improvement,System comprising a scaffold,One motor and a dissolved oxygen unit； The dissolved oxygen unary system by sleeve,One helical member and an impeller are constituted； The casing is equipped with a hollow channel and several air inlets being connected to the hollow channel； The impeller by a connecting tube,One wheel body and a lid are constituted； The connecting tube be equipped with a round tube,One air flue,One faying face and an engaging portion； The engaging portion have a screw hole,Several pieces bonding pads and several ventholes； The wheel body have a disk,Several pieces trapezoid blades,One inner space and several Vomitories； The lid is combined into one with the round tube,And close the bottom of the wheel body； By above-mentioned construction,This creation is set to have effects that upper water and lower water form vertical convection and increase dissolved oxygen in water,It is ideal.一種改良的養殖池用增氧機，係包含一浮架、一馬達及一溶氧單元；該溶氧單元係由一套管、一螺旋件和一葉輪所構成；該套管設有一中空通道和數個與該中空通道連通的進氣孔；該葉輪係由一連接管、一輪體及一蓋體所構成；該連接管設有一圓管、一氣道、一結合面和一結合部；該結合部有一螺孔、數片結合片和數個出氣孔；該輪體有一盤面、數片梯形葉片、一內部空間和數個出入通道；該蓋體與該圓管結合成一體，並封閉該輪體的底部；藉由上述構造，使本創作具有上層水與下層水形成垂直對流和增加水中溶氧量的功效，非常理想。
