The vast majority of patients with pneumonia have antibiotics for 7-10 days. Criteria for treatment discontinuation include: 1. Significant improvement in clinical symptoms such as cough, sputum, fever and mental malaise, and normal body temperature for >3 days. 2. The patient’s vital signs are stable, with normal heart rate, blood pressure and oxygen saturation. 3. Review of routine blood tests, C-reactive protein or calcitoninogen and other inflammatory indicators are significantly lower or better than before. 4. Review chest X-ray or lung CT inflammatory shadows are significantly more absorbed than before. Antibiotics can be stopped if the above criteria are met, but patients may have cough and other symptoms after pneumonia, and can continue to take oral cough and sputum medicines or apply nebulized medicines for symptomatic treatment. Continued use of antibiotics is not recommended, as it may cause conditions such as dysbiosis.