The circulating river equipment is a new type of water amusement project which simulates river rafting activities in nature. It is characterized by a building coordinated with the natural environment as a whole, the use of hydraulics principles, the construction of a scientifically calculated waterway, through the pump to produce a drop, the formation of fast-flowing water. The circulation river is also a ring-shaped drifting river, ranging in length from 100 to 1000 meters, with a natural flow rate of about 50 meters/min. Sometimes it is fast like a flood, sometimes it is rolling like a wave, sometimes it is rotating and sometimes it is slowly moving, so that tourists can release the pressure after their intense work in the babbling water, relieve their body and mind, and feel comfortable with the flow, and rush into the river against the current. Feel the fresh joy of nature.