Pneumonia is a common disease, mostly caused by bacterial infections. Pneumonia itself does not cause chest pain because there are no painful nerve endings distributed in the lung tissue. When pneumonia causes chest pain, most of it is caused by inflammation involving the pleura. Therefore, when pneumonia is healed and chest pain still occurs, the following situations should be considered: 1. Although the lung inflammation is absorbed, the inflammation on the pleura has not completely subsided, and the continuous stimulation of inflammation exists, so it will lead to continued chest pain. 2. Although the lung inflammation is absorbed, but the cough persists, and the fatigue of the diaphragm and intercostal muscles caused by the cough causes chest pain. Chest pain caused by coughing. In this case, the chest pain will gradually disappear with the relief and disappearance of the cough. 3. The chest pain is not caused by pneumonia, but by other causes, such as intercostal neuralgia and angina pectoris. Therefore, a comprehensive analysis is needed to find the cause of chest pain even after pneumonia is well.