If the pain is below the left rib cage after strenuous activity, it is considered to be caused by intercostal muscle spasm due to respiratory muscle tension, which is also known as forked breath. In addition, consider whether the trauma is caused by impact or external pulling, if it is a bump, the painful area may show bruises, lumps, etc. Mild bumps and strains can generally heal on their own, while moderate to severe cases can be treated with medications that reduce swelling and stasis and dredge the meridians under the guidance of a doctor. If the patient has pain below the left rib cage without obvious causes, it may be caused by the patient’s own disease, commonly due to respiratory disease, heart disease, rib disease, abdominal disease, etc.: 1. Respiratory disease: common left-sided bronchopneumonia, left lung lobe cyst, left-sided tuberculosis and other diseases can lead to pain below or near the left rib cage when the patient breathes, accompanied by cough, coughing and other symptoms; 2. 2, heart disease: because the left rib cage is close to the heart, when the patient has heart problems, it may lead to radioactive pain in the heart and spread to the area below the left rib cage, commonly coronary angina, myocardial infarction, etc., and the pain is mostly pressure-like or distension, etc.; 3, rib diseases: such as left pleurisy, left rib chondritis, left intercostal neuritis, rib fracture, etc., such as trauma, bacterial or viral infection, Long-term compression, etc., may lead to different degrees of damage to intercostal nerves or rib cartilage, etc., and thus pain; 4, abdominal diseases: such as gastritis, cardia failure, splenic abscess, pancreatitis, etc., may also lead to pain under the left side of the ribs, and may also be accompanied by nausea, vomiting and other abnormal performance. In addition, herpes zoster can also cause similar symptoms. Patients need to go to the cardiology, respiratory medicine, gastroenterology and other departments of the hospital for examination in combination with their symptoms to identify the disease before treatment can be carried out.