Knots in the back can be caused by acute or chronic injury to the soft tissues of the back. Prolonged desk work, carrying heavy loads and other activities, or impact on the back can lead to soft tissue injuries such as muscles, fascia and ligaments of the back, triggering localized sterile inflammation. Aseptic inflammation of the back can secrete inflammatory exudate, triggering localized edema around the muscles, fascia and other soft tissues, gradually mechanization and adhesion, and finally fibrosis aggregation, resulting in the formation of back fascia, swelling and pain around the soft tissues and other symptoms, and in severe cases, there can be limited back activities. It is recommended to go to the hospital in time to get a clear diagnosis and standardized treatment to avoid adverse effects.