The bone pain in the middle of the two breasts of a lady usually refers to the sternum, which may be related to trauma, angina, gastroesophageal reflux and so on. 1. Trauma: it may be that the position of the sternum has recently suffered an external impact, resulting in soft tissue contusion of the sternum, which can also cause pain in the position of the sternum. 2. Angina pectoris: when the blood flow of coronary artery cannot meet the requirement of myocardial metabolism, causing temporary ischemia and hypoxia of myocardium, angina pectoris will be produced, and some of the angina pectoris is located at the back of the sternum. 3. Gastroesophageal reflux: gastric contents reflux to the esophagus, due to gastric acid in the gastric contents will lead to esophageal mucosal damage, gastroesophageal just located in the back of the sternum, so there will be the symptom of pain in the sternal area. Women’s pain in the middle of the two chest bones can also be seen in other causes, it is recommended to consult a doctor in time, follow the doctor’s instructions for relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or therapy.