Pain between the two breasts feel chest tightness may be pathological factors such as coronary heart disease, costochondritis or chest skin lesions, may also be physiological state changes caused by such as strenuous exercise. Should be closely observed, abnormalities, timely medical diagnosis. 1. Coronary heart disease: If you suffer from coronary heart disease, there may be insufficient blood supply to the heart muscle, manifested as chest tightness and shortness of breath, angina pectoris, and angina pectoris may manifest as pain in the middle of the two breasts, occasionally accompanied by pallor, tightness in the chest, dyspnea and other clinical symptoms. 2. Costochondritis: when the patient suffers from costochondritis, the symptoms such as swelling and pain in the sternum area may appear. 3. Chest skin lesions: If there are chest skin lesions, such as injuries, infections, etc., it may also be manifested as pain in the middle of both breasts, which may be accompanied by chest tightness. 4. Strenuous exercise: sometimes strenuous exercise may produce insufficient blood supply, resulting in the body ischemia and hypoxia lactic acid accumulation, resulting in pain between the two breasts feeling chest tightness. If the pain between the breasts feels tightness in the chest, it is recommended to closely observe, if the symptoms continue to be unrelieved or even aggravated, consult a doctor in a timely manner to confirm the cause, and follow the doctor’s instructions for treatment.