The difference between bacterial infection and viral infection mainly lies in their clinical manifestations, laboratory indicators, treatment modalities and other three aspects, as follows: 1. Clinical manifestations: patients with bacterial infections are often accompanied by fever, chills, and local symptoms such as redness, swelling, heat and pain at the site of infection, purulent secretions, etc., with local symptoms; viral infections can have generalized muscle pain, weakness of the limbs, and there is no purulent secretion, with systemic symptoms as the main focus. 2. Laboratory indicators: bacterial infections in the blood routine of patients with leukocytes, neutrophils increased; viral infections in patients with leukocytes can increase or decrease, accompanied by lymphocyte elevation. 3. Treatment: patients with bacterial infection should be treated with antibiotics, such as norfloxacin, amoxicillin, cefixime, etc.; patients with viral infection need to use antiviral drugs, such as oseltamivir, acyclovir and so on. The emergence of bacterial or viral infections should be taken seriously, if fever, nausea, vomiting and other uncomfortable symptoms, should promptly seek medical attention, so as not to delay the condition.