Some people believe that the more oxygen you take, the better, which is wrong. When some diseases require oxygen treatment, different methods of oxygen therapy must be selected according to the type of disease and the actual situation of the patient, and the concentration and duration of oxygen inhalation are also different. If not properly mastered, the concentration of inhaled oxygen is too high, which will not only not produce a therapeutic effect, but will lead to side effects and toxicity. Experts point out that oxygen alone is not suitable for treatment“Acute altitude sickness is ineffective”, but also easy to form many disadvantages such as the dependence of the human body on external oxygen supply. Oxygen can also cause combustion explosions in certain environments.