Patients with gallstones have a vague pain in the left back, which is usually considered to be radiating pain. 1. If gallbladder stones cause cholecystitis, its typical symptom is episodic biliary colic, mainly manifested as paroxysmal pain in the right upper abdomen. If the pain in the right upper abdomen is more intense, it may involve the nerves of the back, causing radiating pain in the nerves of the back, resulting in a vague pain in the left back. 2. If the gallbladder stone falls into the common bile duct, causing the stone to be embedded in the common bile duct, causing biliary obstruction, the abdomen will experience unbearable severe pain and cause radiating pain, which is manifested as a vague pain in the left back. 3. In addition, it is also necessary to consider whether it is related to other diseases, such as frozen shoulder, cervical spondylosis, lung disease, etc.. Once gallstones patients with vague pain in the left back, it is recommended to go to the regular hospital as soon as possible for consultation and treatment.