High carbon dioxide in the body is usually caused by high partial pressure of carbon dioxide or low partial pressure of oxygen, which is common in patients with chronic respiratory failure and should be treated with systematic oxygen therapy. Do not overdo it. If oxygen is not relieved at home, it is recommended to go to the hospital for oxygen therapy treatment, starting with oxygen inhalation at the wall in the hospital, and setting the oxygen level to 3.5-4.5L/h is enough. If the above treatment does not relieve the condition, hyperbaric oxygen should also be used to correct the high carbon dioxide level in the body. In addition, you should also apply drugs to improve the blood supply, such as taking Chinese medicine Danshen drops, Danshen tablets, Ginkgo biloba and other drugs can alleviate the situation of high carbon dioxide in the body.