The main function of negative ions is the health care. After negative oxygen ions are inhaled into the human body, it can adjust the excited state of the nerve center, improve the ventilating function of the lung and blood circulation, promote metabolism, enhance the ability of the immune system, make people excited, improve work efficiency and so on. It also has a certain therapeutic effect on high blood pressure, asthma, influenza, insomnia, arthritis and many other diseases, so the anion is known as "the vitamin in the air". In addition, anions have the function of dust removal, anions used in the air purifier will mainly play the role of dust removal, because the anion with negative electrons, neutral with positive electric air dust without charge after the settlement, so that the air is purified.

Air anions, also known as negative oxygen ions, refer to the oxygen ions that obtain one or more negatively charged electrons. The main components of the air are nitrogen, oxygen, carbon dioxide, and water vapor. Nitrogen accounts for 78%, oxygen accounts for 21%, carbon dioxide accounts for 0.03%, nitrogen has no affinity for the electron, only oxygen and carbon dioxide have an affinity for the electron, but the oxygen content is 700 times the content of carbon dioxide, therefore, the vast majority of the negative ions generated in the air are air negative oxygen ions. It is formed by oxygen molecules in the air that bind to free electrons. Natural discharge (lightning) phenomenon, photoelectric effect, fountains, waterfalls, and so on can ionize the surrounding air, forming negative oxygen ions. Negative ions have excellent purification and dust removal, reduce the harm of second-hand smoke, improve the prevention of respiratory diseases, improve sleep, antioxidant, anti-aging, remove free radicals in the body, reduce the blood viscosity effect, in the medical community enjoy the "vitamin", "air vitamin", "longevity", "air vitamin" and other reputation.

In the medical community, negative ions are confirmed to serve as an effective means to kill bacteria and purify the air. The mechanism mainly lies in the combination of negative ions and bacteria, making the bacteria produce structure change or energy transfer, leading to the death of the bacteria, and finally sink to the ground. Medical research has shown that the negatively charged particles in the air increase the oxygen content in the blood, which is conducive to blood oxygen transmission, absorption and utilization, and has the role of promoting human metabolism, improving human immune capacity, enhancing human muscle energy, and regulating the balance of body function. Due to the limitations of technical characteristics, some air purifiers will produce "ozone" during their operation. To remind consumers, a certain concentration of ozone can be sterilization, but it may also kill human white blood cells, and even can produce cancer may become possible. Therefore, consumers must be very cautious when choosing products, and should take safe and ozone-free medical and epidemic prevention grade products as the first choice.

Advantages and functions of anion air purifier:

1. It can effectively sterilize, decompose toxic gases and effectively reduce the probability of infectious diseases in spaces that cannot circulate in the air.

2. It can effectively improve the air quality, purify the air, but also can strengthen the cerebral cortex function and mental activities, and reduce the blood pressure, enhance the heart function, and increase the lung function.

3. It can adsorb the small dust particles that can not be adsorbed by the vacuum cleaner dust collection bag, make the dust fall effectively, not flying around, prevent secondary pollution, kill some bacteria in the air and clean the air.

4. It can promote the synthesis and storage of vitamins, strengthen and activate the physiological activities of the human body, increase the negative ions in the air, and make people also feel comfortable.