High serum immunoglobulin G is usually due to infectious factors. When the body has an infection such as a bacterial, viral, fungal or other atypical pathogenic infection, the body produces an immune response and high immunoglobulin G occurs. The body should take antibiotics such as cephalosporin, azithromycin or levofloxacin, penicillin, etc. to effectively reduce the infection and alleviate the high serum immunoglobulin G. At the same time, certain herbal medicines should be used to regulate the immunity and detoxify the body, such as Niuhuang Anti-inflammatory Tablets and Niuhuang Detoxification Tablets to treat the high serum immunoglobulin. The high level of immunoglobulin G should also be treated with a light diet and a low-salt, low-fat diet, drinking plenty of warm water and eating fruits and vegetables rich in vitamins and trace elements.