The back reflex zone corresponds to the following symptoms: 1, the back is the reflex zone of the cervical spine and the periapical and intercervical joint area, when the cervical spine is compressed, there will be clinical symptoms and clinical manifestations of shoulder joint pain and back pain. 2, common orthopedic surgery diseases and stretching and strain of the trapezius and latissimus dorsi muscles will also appear in the back reflex zone such as the scapular area with corresponding symptoms, such as muscle aches or pains in the middle of the bone. The back reflex zone is also the reflex zone of the coronary arteries of the heart. The coronary arteries of the heart are divided into three branches, namely, the left anterior descending branch, the left circumflex branch and the right coronary artery. The reflex zone of the upper respiratory tract infection, such as lung infection and acute bronchitis, will appear coughing, coughing sputum, breathing difficulties and other corresponding symptoms.