Pain in the lower part of the chest can be caused by the following: 1. Pain in the right quarter rib area. The most common cause of pain under the right side of the chest is cholecystitis, especially during acute attacks, which can also manifest as colic, accompanied by nausea as well as vomiting. If gallbladder stones are also prone to impaction, or even peritonitis, surgery may be required in severe cases. 2, it can be a disease that occurs in the pleura, especially if the infection is inflammatory and causes pain. It is also accompanied by restricted deep breathing, and the nature of the pain is pins and needles or knife-like pain, and active examination can confirm the diagnosis. The symptoms can gradually improve with timely anti-infection treatment. 3, the left side of the lower anterior chest pain, consider the possibility of heart disease, especially myocardial ischemia, occurring more often in elderly patients.