Insufficient oxygen supply to the brain may be due to lack of rest, atherosclerosis, cervical spondylosis, heart failure, chronic obstructive pulmonary disease, etc., which needs to be treated with medication or surgery for the cause. 1. Lack of rest due to physiological factors such as prolonged staying up late, overwork, excessive mental stress, depression and anxiety may result in insufficient oxygen supply to the brain, which requires sufficient rest. 2. Atherosclerosis: when lesions involve the internal carotid artery and vertebral artery, the narrowing of the artery leads to insufficient blood supply to the brain and insufficient oxygen supply. Atorvastatin, aspirin and other drugs can be taken to treat the disease, and if necessary, endarterectomy and arterial stenting can be chosen to treat the disease. 3. Cervical spondylosis: After the cervical disc herniation, the adjacent vertebral artery is compressed, resulting in insufficient blood supply and oxygen supply to the brain, which can be treated with physiotherapy such as massage, acupressure, traction, etc. or surgery. 4. Heart failure: the heart pumping function decreases, resulting in insufficient circulating blood supply, and thus insufficient oxygen supply to the brain. Furosemide, sodium nitroprusside, digoxin, enalapril and other drugs can be applied. 5. Chronic obstructive pulmonary disease: chronic airway inflammation leads to airway narrowing, insufficient lung ventilation, decreased blood oxygen content and brain hypoxia. It can be treated with drugs such as albuterol, budesonide, ipratropium bromide and aminophylline. Prompt medical attention is needed to identify the cause of the disease and medication is administered under the guidance of a physician.