A bathing pool assembly with water full of nano-scale ozone bubbles for rehabilitation has a bath, a reservoir and two circulating systems. The bath and the reservoir both have a main inlet and a main outlet. The reservoir further has a tap to allow water to flow out of the reservoir, which is provided for people to drink or gargle. The circulating systems are connected respectively to and communicate respectively with the bath and the reservoir to recycle water. The circulating systems are further connected to a gas generator assembly having an oxygen generator and an ozone generator to provide water full of oxygen and ozone to release free radicals and anions.