Oxygen inhalation in patients with cerebral hemorrhage can improve the hypoxic state around the cerebral hemorrhage lesion, and also help to stabilize mood. After cerebral hemorrhage, the hematoma enters the brain parenchyma and causes compression, and the surrounding brain tissue will be ischemic and hypoxic, and in the acute stage of cerebral hemorrhage, cerebral edema will further aggravate the hypoxic and ischemic state. Oxygen inhalation can improve the oxygen concentration in the blood, increase the oxygen supply to the brain tissue, so that part of the ischemic and hypoxic brain cells can be improved. In addition, when a person is in emergency, the body’s neurohumoral regulation will give priority to the blood supply to the heart, brain, kidneys and other important organs, while other tissues are also in ischemic and hypoxic state with reduced blood circulation, oxygen inhalation can also improve the oxygen supply to these tissues and oxygen can help to stabilize mood and reduce the patient’s agitation state.