There are many causes of right-sided chest pain, and chest pain can be caused by diseases on the inside and outside of the chest. Common causes include, rib fractures and pneumothorax caused by various traumas to the chest. Inflammation of the right chest wall, such as dermatitis, osteomyelitis, nonsuppurative rib chondritis, pleurisy, etc. Occupying lesions in the right thoracic cavity, which can also cause chest pain, such as lung tumors. It is also common in intercostal neuritis, herpes zoster, etc. Tension pain radiating from other organs in the chest, etc., can also cause chest pain, such as myocardial ischemia and angina pectoris. To determine the cause of chest pain, it is important to observe its accompanying symptoms to help determine the cause of the disease. If it is accompanied by fever, it can be seen in lobar pneumonia, tuberculous pleurisy and abscess chest. Coughing, coughing up sputum and coughing up blood can be caused by tuberculosis, bronchiectasis and bronchial cancer. Accompanying chest tightness and dyspnea are commonly seen in pneumothorax, emphysema, etc.