If the pneumonia is mild and the patient has no underlying disease, he or she can be treated with medication. The most common causative agent of community-acquired pneumonia is Streptococcus pneumoniae, so patients with pneumonia can choose to be treated with oral levofloxacin, moxifloxacin, amoxicillin clavulanate potassium and other antibiotics in outpatient clinics. It should also be noted that amoxicillin clavulanate potassium belongs to the penicillin class of antibiotics, before applying this drug you need to ensure that the patient is not allergic to penicillin drugs, and also need to do penicillin skin test, penicillin skin test negative before oral amoxicillin clavulanate potassium treatment. Mycoplasma, Chlamydia and other atypical pathogenic infections are also common in pneumonia. If atypical pathogenic infections are considered, oral levofloxacin, moxifloxacin and azithromycin can be used for treatment. Pneumonia caused by influenza virus should also be considered during the flu season, and if it is caused by influenza virus, oral oseltamivir is required for antiviral treatment. Therefore, even if the pneumonia is mild, it is recommended to visit a respiratory clinic and choose appropriate oral antibiotics for treatment under the guidance of a doctor.