The present invention provides a fan blade structure of a water tank oxygen supply machine, which mainly extends a boundary area radially by an axial centering portion of the pivot seat, and the boundary area defines a plurality of sides respectively with respect to the two sides of the pivot seat The same number of the first blade and the second blade are disposed at an angled offset relative to the boundary zone； thereby enabling the first blade and the second blade to alternately rotate the impeller via the high speed Bringing the water to the sides of the boundary area, so that the raised water flowers are crossed and mixed into each other to enlarge the water area, which can reduce the water resistance, so that the resistance is small, and because of the first blade and the second The fan blade system is arranged at an angle with respect to the boundary zone, so that the height and area of the water rising from the water surface are increased, the contact time between the water droplet and the space is increased, the dissolved oxygen amount and the water flow area at the time of watering are increased, and the dissolved oxygen is increased. In order to achieve the effect of high dissolved oxygen.本創作係提供一種水車供氧機之扇葉結構，主要係藉由樞軸座之軸向置中處係徑向延伸一分界區，該分界區相對該樞軸座兩側邊分別界定複數且相同數量之第一扇葉片及第二扇葉片，並相對該分界區互呈夾角錯開配置組態；藉此令本創作藉由該第一扇葉片及第二扇葉片可交互經由高轉速旋轉葉輪帶起而使分界區兩側交互甩水，使揚起的水花往彼此方向交叉混合帶入擴大水花面積，可降低打水阻力，以使阻力較小，且因該第一扇葉片及第二扇葉片係相對該分界區互呈夾角錯開配置組態，而使旋出水面之揚水高度及面積增加，增長水珠與空間接觸時間，提昇打水時之溶氧量及水流面積，增加溶氧，藉此達到高溶氧之效果者。
