The pain in the right breast edge and back pain after three years of gallbladder removal may be caused by bile retention, nerve irritation and increased pressure in the bile duct. 1. Bile retention: After the gallbladder is removed, some of the bile will be stored in the bile ducts, which will cause the pressure in the bile ducts to rise, and the abdominal sphincter spasms and symptoms of pain. 2. Nerve stimulation: due to the special location of the gallbladder, it is easy to cause stimulation to the vagus nerve and sympathetic nerve after the gallbladder is removed, and there will be pain on the side of the breast and the back. 3. Increased pressure in the bile ducts: after gallbladder removal, the internal pressure in the bile ducts will increase, which will cause spasmodic pain in the biliary area. It may be reflected to the back and the side of the breast. It is recommended to go to the hospital for timely examination, the cause of the disease and timely symptomatic treatment.