The difference between viral infection and bacterial infection generally includes different incidence proportion, different clinical symptoms and different examination results. 1. Different incidence proportion: most of the infection symptoms are induced by viral infection, only a small part of the infection symptoms are induced by bacterial infection. 2. Different clinical symptoms: the fever induced by viral infection is generally retention fever, which leads to a continuous rise in body temperature and high fever; the fever induced by bacterial infection is generally fluctuating fever, with the body temperature fluctuating from one moment to the next. 3. Different examination results: in the routine blood examination, viral infection is generally elevated lymphocytes and lowered neutrophils; bacterial infection is generally elevated neutrophils, white blood cells may also be elevated and lowered lymphocytes. In addition, whether it is bacterial infection or viral infection, both have a certain degree of harm, need to actively accept targeted treatment.