The typical symptoms of left lower lobe pneumonia are cough, sputum, fever and even blood in the sputum. In some cases, it may spread to the pleura and cause chest pain and dyspnea, and in severe cases, it may cause abscessation of the chest or sepsis, and may cause loss of appetite and weakness. It is necessary to give cough and expectorant medication and control infection in time, and also select sensitive antibiotics according to sputum culture. During the treatment period, drink more water, pay more attention to rest, reduce outdoor exercise, keep indoor air circulation, and the treatment period is about one week.