An aquaculture filtration system is provided, including a first filter unit and an aeration unit. The first filter unit is adapted for screening a part of dirt from a fluid. The first filter unit includes at least one filter material assembly. Each the filter material assembly has a first filtration portion and a second filtration portion. A pore size of the second filtration portion is smaller than a pore size of the first filtration portion. The aeration unit has an aeration space. The aeration space is adapted for the fluid and a plurality of carriers flipping inside.本發明關於一種養殖過濾系統。該養殖過濾系統包括一第一過濾單元及一曝氣單元。該第一過濾單元供篩選阻攔一流體之部分污物,該第一過濾單元包含有至少一濾材組,各該濾材組設有一第一濾部及一第二濾部,該第二濾部之孔洞之孔徑小於該第一濾部之孔洞之孔徑。該曝氣單元設有一曝氣空間,該曝氣空間供該流體及複數擔體於其中翻動。1‧‧‧第一過濾單元2‧‧‧第二過濾單元3‧‧‧分離單元4‧‧‧曝氣單元5‧‧‧缸體72‧‧‧排出閥組件81‧‧‧進水單元82‧‧‧出水單元85‧‧‧曝氣組件91‧‧‧區隔方向92‧‧‧流動方向93‧‧‧排列方向
