Coughing does not cause “lung pain”, which is a subjective sensation, but coughing can cause pain from lesions in the chest wall and chest cavity. The lungs themselves have no sensory innervation, so it is difficult to experience pain from a substantial lung lesion. In most cases, the pain in the chest wall after a common cough is due to muscle strain caused by repeated violent coughing, which leads to pain. When people cough, they need the chest wall muscles, ribs and other tissues to work in a coordinated manner to quickly expel the lung gas from the trachea. In this process, the muscles need to move quickly and forcefully, which repeatedly can cause muscle strain pain, which is usually self-limiting and gradually disappears after the cough is relieved; in addition, chest pain when coughing can also be seen in inflammation of the pleura, where adhesions occur between the dirty layer and the wall pleura, and the pain is obvious when coughing. Coughing causes pneumothorax, repeated coughing especially in thin and tall young people and patients with emphysema alveoli, leading to rupture of the chest wall of the dirty layer and gas entering the pleural cavity, which can cause severe pain along with chest tightness and dyspnea, requiring immediate hospital consultation. There are also some relatively rare ones such as pulmonary embolism and lung tumors that can present with cough, chest pain, and hemoptysis symptoms. Intercostal neuropathy and rib fractures can also present with coughing accompanied by chest pain. This requires differential diagnosis by a medical professional. Therefore, if coughing causes “lung pain”, self-limiting pleurisy and muscle strain can mostly heal on their own, but if “lung pain” is not relieved for a long time or is progressively aggravated, you need to consult a hospital for further treatment.