Back pain is most commonly caused by over-exercise, soft tissue injuries, spinal disorders, lung disease, heart disease, etc. If the symptoms persist, it is recommended to seek medical treatment. 1. Excessive exercise: If the patient is engaged in strenuous physical activities, it is easy to cause lactic acid to accumulate in the back, and metabolic waste will produce pain. 2. Soft tissue injury: if the patient’s back skin, muscles, ligaments are traumatized, fatigue fracture and other factors, it will produce pain in the back, but also may be a chronic strain on the muscles or inflammation of the fascia, the cold stimulation can also cause pain. 3. Spinal diseases: if the patient has scoliosis, herniated disc compressing the peripheral nerves, vertebral tumors and other diseases, it can produce back pain. 4. Lung disease: If the patient has pneumonia or pleurisy, the location of the lesion is close to the back, which can also cause back pain. 5. Heart disease: If the patient suddenly has a heart attack or myocardial ischemia, it can also cause back pain, accompanied by pain in the chest area. Causes of back pain is more, may also be related to osteoarthritis, rheumatoid arthritis, osteoporosis, peripheral neuropathy and other diseases, if there is no relief after resting, it is recommended to go to the hospital in time to find out the cause of the disease, by the doctor targeted treatment.