A two-blade water-skiing type biofan, which is suitable for being disposed in a culture pool, comprises a fixation mechanism, a motor mechanism fixed on the fixation mechanism, and a rotary mechanism utilized to make the fixation mechanism and the motor mechanism locate above a liquid surface. The rotary mechanism comprises a central floating seat unit, two rotational arm units which are oppositely, outwardly-extended and symmetrically installed on the central floating seat unit, and two biofan boards which are respectively installed on the two rotational arm units. The central floating seat unit can be rotated relative to the fixation mechanism when being driven by the motor mechanism. Accordingly, water mass stratification can be effectively destroyed, the circulatory exchanging of upper and lower layered water mass of the culture pool can be facilitated, the oxygen-dissolving homogenization and effects of aeriation disinfection and deodorization of the culture pool can be greatly enhanced, and efficacies of centrally gathering pollutant and water quality improvement can be attained. That is, the disclosed two-blade water-skiing type biofan can be deemed as an extraordinarily innovative design.一種二葉滑水式耕水機,適用於設置在養殖池,包含一固定機構、一固定於固定機構的馬達機構,及一使固定機構與馬達機構高於液面之旋轉機構。旋轉機構包括一中央浮座單元、兩個相背往外延伸地對稱安裝於中央浮座單元的旋轉臂單元,及兩個分別安裝於該等旋轉臂單元的耕水板,中央浮座單元可被馬達機構驅動而相對固定機構旋轉,本發明二葉滑水式耕水機可有效打破水體分層,促使養殖池之上下層水體循環交換,大幅提高養殖池之溶氧均勻化與曝氣消毒和除臭的效果,且可達到中央集汙與改善水質之功效,是一種非常創新的設計。3‧‧‧二葉滑水式耕水機4‧‧‧旋轉機構41‧‧‧中央浮座單元411‧‧‧浮體412‧‧‧旋轉座42‧‧‧旋轉臂單元421‧‧‧內臂桿422‧‧‧固定端部427‧‧‧第二端部43‧‧‧耕水板431‧‧‧本體部435‧‧‧翼片部437‧‧‧迎水面438‧‧‧背水面5‧‧‧固定機構51‧‧‧馬達機構423‧‧‧樞接端部425‧‧‧外臂桿426‧‧‧第一端部52‧‧‧轉接架53‧‧‧固定臂54‧‧‧配重件
