In addition, negative ions can also enhance human immunity, improve human self-healing ability, effectively prevent and treat diseases such as diabetes and tumors, and are an ideal choice for people's daily health care. After many effective effects of negative ions on human body were discovered, the negative ion generator which can generate air negative ions was highly praised by people. Tao, an expert from China Institute of Air Negative Ion and Ozone, said that at present, the only air negative ion generator with small particle size, high activity and high ecological degree in China is the negative ion converter technology, and the negative oxygen ion generator using the negative ion converter technology has also become a hot potato in the market, and it has become the object of people's snapping up.