A system of cultivating aquatic product and plant contains: a cultivation tank, a blower configured to pump air into the cultivation tank, a first pump, a protein separator, a first ultrafiltration unit, a collection chamber configured to hold bubbled fluid, a second ultrafiltration unit configured to maintain mucus and solid suspension substances in water, a first gathering bucket configured to hold cloudy high-protein concentration fluid, a second gathering bucket, a Nano-filtration unit, a recycle tank configured to hold the recyclable water from the Nano-filtration unit, and a second pump used to pump the recyclable water back to the cultivation tank. The first pump includes a first tube and a second tube. The protein separator includes a hollow cylinder, a bubble generation unit, an outlet pipe, and a bubble pipe. The first ultrafiltration unit includes multiple ultrafiltration films equidistantly. The Nano-filtration unit includes multiple Nano-filtration films.
