Patients with pneumonia in the left lower lung do not necessarily have to be hospitalized, mainly based on the patient’s condition. If the patient’s symptoms are relatively mild, no systemic symptoms, no fever, coughing up pus and sputum and other phenomena, do not need to be hospitalized, you can take oral antibacterial drugs, such as amoxicillin, cefadroxil and other anti-inflammatory drugs, anti-infective treatment, usually oral antibacterial drugs will be relieved after 3-5 days of symptoms. If the symptoms are more serious, with high fever, chills, coughing up pus and sputum, chest pain and other symptoms, and the scope of the lesions of the left lower lung pneumonia is relatively large, it is recommended to be hospitalized, and during the hospitalization period, intravenous use of antibacterial drugs, to be anti-infective treatment, and at the same time to strengthen the symptomatic supportive therapy.