Left side chest rib center pain may be caused by coronary heart disease, intercostal neuritis, costochondritis and other diseases. 1. Coronary heart disease: coronary heart disease may lead to the left side of the chest rib center pain, the patient will appear chest tightness, shortness of breath, dyspnea and other adverse symptoms, some patients will appear numbness of the hands and feet, general weakness and other discomforts, emotional excitement or overexertion will be more pronounced when the disease, the severity of which may cause shock. 2. Intercostal neuritis: intercostal neuritis can also cause pain in the middle of the ribs on the left side of the chest, the pain varies from person to person, some patients will be more intense, usually accompanied by a burning sensation, chest expansion exercise and other large-scale movements, may make the symptoms more intense. 3. Costal chondritis: left side chest rib center pain may also be symptoms caused by costal chondritis, the pain is radioactive, some patients abdominal and back discomfort, pressure on the affected area will be more pronounced pain, may make the upper limb mobility is impeded. There are many other causes of left-sided chest rib center pain, you need to consult a doctor in time for examination, under the guidance of the doctor’s advice to actively cooperate with the treatment, to avoid aggravation of the condition.