Patients often have fever usually have the following factors, from the perspective of Chinese medicine at this time is the patient’s constitution is too weak, so wind, cold, damp evil invade the body and lead to frequent fever. From the point of view of Western medicine, there are the following reasons: 1. Frequent fever should be considered as a factor of inflammatory infection, which is caused by low immunity in the body, which allows bacteria, viruses, fungi and other pathogenic microorganisms, such as mycoplasma or chlamydia, to invade the body and cause inflammatory rejection of the body, which can produce fever. 2. Frequent fever can also occur in aseptic inflammatory diseases, such as those with Fever may also occur in cases of rheumatism, rheumatoid arthritis, rheumatoid arthritis, gout or connective tissue diseases such as dermatomyositis and systemic lupus erythematosus. 3. Fever may also occur in cases of rare diseases resulting in extremely low immunity, such as severe anemia, blood system diseases, tumors or AIDS.