Normal people in good health generally do not need oxygen, so there is no so-called normal people inhale oxygen for how long the appropriate statement. Oxygen inhalation is a medical treatment, clinically known as oxygen therapy, can be used for the treatment of various causes of hypoxia, in order to ensure the normal functioning of the body’s internal organs and tissues, to prevent hypoxia. At present, there is no scientific evidence to show that oxygen therapy is beneficial to healthy normal people, so healthy normal people do not need to inhale oxygen when there is no hypoxia. Under normal conditions, natural air breathing can fully utilize the oxygen contained in the air to ensure the normal functioning of the organism, and there is no need for additional oxygen intake. Individuals should not self-administer oxygen without an indication for oxygen therapy. In case of respiratory disorder and other discomforts, please go to the hospital in time and regulate oxygen therapy under the guidance of the doctor.