Back pain on both sides of the back should be alert to ankylosing spondylitis, muscle strain, osteoporosis, pleurisy and other diseases. 1. Ankylosing spondylitis: it can involve the spine, resulting in pain, stiffness and limited movement in the back and lower back. 2. Muscle strain: Sedentary or frequent bending can cause aseptic inflammation of the myofascia of the back, resulting in pain that is alleviated by rest. 3. Osteoporosis: mostly occurring in the elderly, early manifestations of back pain on both sides of the spine, weakness, pain is diffuse, no fixed pain points. 4. Pleurisy: pleural inflammation secretion of fluid can cause back pain, deep breathing pain aggravation. There are many reasons for back pain on both sides of the back, you need to go to the hospital to check the specific cause of the disease, for the cause of the treatment.