Infectious fever, which may be caused by bacterial infection or infection with mycoplasma, chlamydia, or fungus. The degree of fever, bacterial infection, there will be a high fever, at least above 38-39 ℃, need to give symptomatic treatment with antibiotics or antipyretic drugs. Fever-reducing drugs are generally used Xiao Chai Hu granules, fever-reducing injection compound aminobarbital, or physical cooling. Anti-infection or must be, can use levofloxacin, cefoperazone sulbactam sodium, cefradine, cefuroxime. If one alone can’t handle it, a combination of drugs should be used. There is also mycoplasma, chlamydia, generally with azithromycin, roxithromycin anti-infection. For fungal infections, fluconazole or amphotericin B is used, and the fever will subside after treatment is given.