Pain in the left quarter rib area should first be considered as a lesion of the spleen, stomach, lungs, left kidney, and chest, as well as cardiovascular diseases, sometimes angina pectoris, acute myocardial infarction, myocarditis, pericarditis, aortic coarctation, aortic aneurysm, pulmonary hypertension of various causes, hypertrophic obstructive cardiomyopathy, and cardiovascular neuroses, etc., which may cause pain. In addition, herpes zoster, costochondritis, intercostal neuritis, rib fractures, skin infections, rib tumors, and kidney stones can also cause left quarter rib pain. Mediastinitis, mediastinal emphysema, mediastinal tumor, reflux esophagitis, and esophageal cancer can also cause do left quarter rib area pain. During the pain period, do not use pain relieving drugs indiscriminately, so as not to cover up the condition, you must first go to the hospital for examination to clarify the cause of the disease.