Whether high ferritin can be vaccinated with New Crown Vaccine needs to be decided according to the specific cause and condition. For example, malignant tumors, liver cancer, lung cancer or leukemia, these patients have elevated serum ferritin because of the increased synthesis of ferritin by the cancer cells. Generally, patients with active cancer or those who have not been cured, this kind of patients are not suitable for the new crown vaccine. If the cancer has been stabilized for a long period of time or clinical cure has been achieved, then it is possible to give the new crown vaccine. Some diseases with abnormal liver function such as viral hepatitis, autoimmune liver disease antibodies, because the liver is damaged, so ferritin will be increased, this kind of acute damage to liver function, also can not be given the new crown vaccine. Inappropriate use of iron therapy can also lead to an increase in ferritin, which can be administered after the normalization of the indicators by stopping the use of iron therapy.