Causes of hypoxia include carbon monoxide poisoning, lung disease, and heart disease, with different causes and different treatments. 1. Carbon monoxide poisoning: due to the combination of carbon monoxide and hemoglobin, hemoglobin can not carry oxygen into the body, thus the symptoms of hypoxia, can be used to improve the symptoms of hypoxia by high pressure oxygen inhalation and other methods. 2. Lung diseases: such as chronic obstructive pulmonary disease, pulmonary obstruction, asthma, etc., can cause the symptoms of hypoxia, according to the degree of the patient’s condition, using oxygen, tracheal intubation, tracheotomy and other methods to alleviate the symptoms of hypoxia, and at the same time, for the cause of hypoxia caused by the cause of the cause of the disease, for the cause of the treatment. 3. Heart disease: such as congenital heart disease, pulmonary heart disease, etc., can be taken to inhale oxygen and other methods to improve the symptoms of hypoxia, congenital heart disease patients, can consider surgical treatment. In addition, anemia and living in highland areas may cause hypoxia symptoms. The cause of hypoxia can be clarified first, and treatment can be carried out according to the cause in order to correct the symptoms of hypoxia.