Pneumonia can occur in adults as well, and when pneumonia is diagnosed in adults, the causative organism is evaluated; common causative organisms include bacteria, viruses, and atypical pathogens. If the patient is suffering from a bacterial infection, oral antibiotics may be given in mild cases, and intravenous antibiotics may be given in severe cases. Commonly used antibiotics include cefixime, cefuroxime, amoxicillin, azithromycin, and levofloxacin. If the patient is diagnosed with viral pneumonia, antiviral drugs, such as oseltamivir, abidol, or drugs to clear heat and detoxify the toxin, such as Qingkailing, pudilan anti-inflammatory oral solution, etc., and at the same time, symptomatic treatment should be given, such as antipyretic, analgesic, rehydration, and other related therapies. If the patient is diagnosed with mycoplasma pneumonia, azithromycin and erythromycin of macrolides, or moxifloxacin and levofloxacin of quinolones need to be used.