For female patients, if there are symptoms of occasional pain down the middle of the chest, the following factors should be considered: First, the clinical symptoms and manifestations of occasional pain in the middle of the chest will be present if the factors of trauma are taken into account, such as fractures of the sternum or ribs, contusions and stretching injuries of the surrounding soft tissues caused by trauma to the patient. Second, if female patients have some, such as mastitis, lobular hyperplasia of the breast, breast tumor occupancy and other conditions, there will also be pain in the middle of the chest. Third, if the patient has unstable angina pectoris of coronary heart disease, acute myocarditis, acute pericarditis, malignant arrhythmia, heart failure caused by the above symptoms, there will also be chest tightness, shortness of breath and pain in the chest. Fourth, if the patient has intercostal nerve pain, herpes zoster pain, there will also be pain in the middle of the chest. Fifth, if the patient develops digestive system diseases, such as bile reflux gastritis and gastroduodenal ulcer, it will also lead to pain in the above-mentioned areas.