If the patient has the condition of low blood oxygen, the blood oxygen can be improved rapidly through oxygen inhalation, hyperbaric chamber, drug treatment and other methods. 1. Oxygen inhalation: Oxygen inhalation can rapidly increase the partial pressure of arterial blood oxygen, blood oxygen saturation and blood oxygen content in the body, to ensure that all organs in the body on the demand for oxygen, through the inhalation of oxygen therapy, can rapidly increase blood oxygen. 2. Hyperbaric Oxygen Chamber: Hyperbaric Oxygen Chamber can press the oxygen into the blood by absorbing oxygen at a pressure higher than the normal atmospheric pressure, because of the increase of air pressure, the blood oxygen can be increased rapidly. 3. Medications: If low oxygen is due to bronchospasm, then medications such as aminophylline may be needed to relax the airway smooth muscle to ensure that sufficient oxygen enters the airways, so that it can enter the bloodstream via the alveoli and increase blood oxygen levels. There are many other ways to quickly raise blood oxygen levels, and the patient should seek medical attention as soon as possible while taking emergency measures. Another tip, if you need to use drugs should be used under the guidance of a doctor, do not blindly use drugs.