Middle back pain can be caused by back trauma, muscle strain, ankylosing spondylitis, heart disease, etc. Accordingly, you can consult dermatology, orthopedics, rheumatology and cardiology. 1. Back trauma: Trauma to the skin of the back, such as abrasions, can cause pain in the middle of the back, which belongs to the category of dermatology. If the scope of injury is large, you can also go to the emergency department for emergency debridement. 2. Muscle strain: Long-term physical activities can cause muscle strain in the back, which is also manifested as pain in the middle of the back, which belongs to orthopedic diseases. 3. Ankylosing spondylitis: when ankylosing spondylitis involves the thoracic spine, it can also lead to pain in the middle of the back, and at this time, you should hang up with the Department of Rheumatology and Immunology. 4. Heart disease: if the pain in the middle of the back, and there is pain in the anterior region of the heart, it may also be caused by heart disease, such as angina pectoris, myocardial infarction, etc., you should go to the cardiology department or the emergency department, chest pain center, etc. for consultation. Pain in the middle of the back can also be caused by many reasons, and should be timely to the hospital, you can consult and make an appointment for triage to avoid delays in the condition.