Dongjiang waterfall is 17 meters high. Flying down the turbulence hit the stone wall, water splashed, water mist filled, distant like satin training hanging in the jungle, near like flying pearls splashing jade, looking up at "suspected Galaxy falling nine days.". The waves reverberate in the valley and woods. Dongjiang waterfall is not only a magnificent presentation, but also a "factory" of negative oxygen ion manufacturing. Scientific research has confirmed that under the impact of the waterfall, a large number of negative oxygen ions can be produced in the air. In the waterfall area, the concentration of negative oxygen ions in the air can reach 100000 to 500000 per cubic centimeter. Breathing such air can enhance the natural healing power of the human body.