High blood oxygen may be due to high oxygen concentration, which can easily lead to oxygen toxicity and bring great harm to human lung function, it is recommended that you need to go to a professional hospital vascular surgery for examination. Severe high blood oxygen requires immediate related treatment, otherwise it is easy to the symptoms of oxygen toxicity, it is recommended that patients actively cooperate with professional doctors for treatment. Generally mild elevation of blood oxygen, the impact on the body is not significant. Usually pay more attention to rest, observe changes in vital signs, regularly recheck the blood oxygen index, and adjust the treatment plan in a timely manner. Daily diet should be balanced nutrition, do not partiality or overeating, diet healthy nutrition so that the body needs daily nutrients to be absorbed, the body resistance is good, the functions can gradually return to normal.