Thinking back to the days when Nie Weiping reigned over the chess world, sucking oxygen, repeatedly saving the day and building a successful career. I believe that many people still remember the exciting picture. Oxygen inhalation has become Nie’s “unique weapon”. A recent report revealed that Zhao Benshan also often inhales oxygen to refresh himself when he is physically exhausted. Oxygen health care is gaining attention and more and more people are trying to improve and maintain their health by taking oxygen. Modern research shows that the existence of sub-health states is related to the lack of oxygen in tissues and organs. The common symptoms of dizziness, drowsiness, and easy fatigue in subhealthy people can often be effectively relieved or even eliminated with oxygen therapy. The anti-aging effect of oxygen is also more precise. As people age, vascular endothelial cells are repeatedly damaged, metabolites accumulate, blood viscosity rises, and tissue cells farther away from blood vessels suffer from insufficient oxygen metabolism, hypoxia, ischemia, and accelerated apoptosis. Giving them adequate oxygen supply regularly and correcting the state of tissue cell hypoxia and ischemia in stages can slow down and reduce the speed and quantity of cell death and achieve the purpose of prolonging life. The key to whether a person needs extra oxygen supplementation is to determine whether there is hypoxia. If there is a deficiency, it is supplemented, and if it is supplemented, it is well. In fact, people living in the city, shuttling through the jungle of steel and concrete, breathing the somewhat turbid air, bearing the pressure of work and life, especially those white-collar workers who spend their days with computers, and students who are urged by the sound of midterm and entrance exams all day long, often have different degrees of oxygen deficiency. Oxygen inhalation is the most direct and effective way to improve oxygen deficiency in human body. For such people, oxygen health care has an important role that is difficult to replace. There are three types of oxygen therapy and oxygen health care: general oxygen, atmospheric saturation oxygen and hyperbaric oxygen. Normal oxygen inhalation is the most commonly used method of oxygen delivery, generally using nasal plugs, nasal cannula or mask oxygen inhalation, the actual oxygen concentration of inhaled oxygen can reach up to 45% to 50%. Saturated oxygen inhalation is a special oxygen inhalation method that is nearly double the concentration of ordinary oxygen inhalation. It circumvents the “half-open” phenomenon of losing some oxygen from the nose during ordinary oxygen inhalation, and can increase the dissolved oxygen in the blood of the oxygen user by 6 times, which greatly increases the oxygen supply of the body. Hyperbaric oxygen therapy can increase the dissolved oxygen content in human plasma by more than 14 times, and has some other special therapeutic effects, the most significant effect of improving the body’s hypoxia. In addition to the indications and contraindications, there are also some restrictive requirements in the process of oxygen supplementation, such as the patient must wear cotton clothing, cannot bring cell phones, MP3, iPad and other electronic products, should be concentrated in the cabin treatment, the cabin activity space and the way are restricted, can not enter and exit at will, etc. Considering all aspects, saturated oxygen is a kind of oxygen supplementation method especially suitable for the health care needs of subhealthy people. For most people, it is generally recommended to take oxygen once a day for no more than one hour, stopping for 5 minutes in the middle of each inhalation, and taking oxygen 10-20 times in a row. A special reminder is that additional oxygen supplementation, similar to clinical medication, is how to use it? How much to use? How much and for how long? It should be done under the guidance of professionals. In addition to the amount and time of oxygen supplementation, we should also pay attention to the ventilation of the room to avoid fire hazards caused by high oxygen concentration in the room.