The causes of pain in the back of the right scapula are generally the following:1. Diseases of the scapula or ribs themselves, such as tumors of the scapula or ribs themselves, or metastatic tumors that lead to pain.2. Arthritis of the thoracic-shoulder. There is a thoracic-shoulder joint between the scapula and the chest, and when there is chronic inflammation of this joint, pain in the back of the scapula will also occur. It often has a fixed pressure point, which can lead to the pain and weakness of the shoulder and the limbs on the same side, especially in the evening after sleeping or laboring, and the pain is very obvious.3, the pain caused by the disease of the lungs itself. When there is pneumonia, tuberculosis or lung tumors, then there will be pain in the back of the shoulder.4, reflex pain caused by gallbladder disease, such as cholecystitis and gallbladder stones, there will be reflex pain in the back of the scapula, and then you can carry out CT and ultrasound examination to further confirm the diagnosis.