Pain in the middle of the right back may indicate soft tissue diseases such as muscle strain and fasciitis, or internal diseases such as pleurisy and cholecystitis. 1. Soft tissue diseases: there are many muscle groups in the middle of the right side of the back such as trapezius and latissimus dorsi muscles, which may cause fatigue injury to the soft tissues, induce aseptic inflammation, and cause pain symptoms when you do a large amount of exercise or labor for a long period of time. 2. Visceral diseases: right pleurisy, right lung space-occupying lesions pulling the right pleura caused by radiating pain; may also be caused by cholecystitis, gallbladder stones caused by the surface of the body involved in the pain and the emergence of the above symptoms. There may be other reasons for the pain in the middle of the right back, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.