The common causes of pain within the ribs below the left nipple are as follows: 1, coronary heart disease: especially the angina type, typical angina is chest tightness, chest pain or pressure in the precordial region, which can be rapidly relieved after rest or medication; 2, herpes zoster: it can be distributed along the ribs, but clusters of blisters can appear on the skin surface after the incubation period; 3, pericarditis: such as non-specific pericarditis, tuberculous pericarditis or certain tumors If pericardial effusion is induced, chest pain, chest tightness and other discomfort may also appear in the precordial region; 4. Other diseases: such as cervical spine compression of the relevant nerve can be called cervical heart syndrome, which is manifested by various chest tightness, chest pain and other discomfort in this area. If the patient has gallbladder disease of digestive system, i.e. biliary heart syndrome, or costochondritis will cause corresponding performance.