Back pain after drinking alcohol should be alert to the back muscle spasm, biliary tract disease, pancreatic disease and other causes. 1. back muscle spasm: in the process of drinking, usually sit for a long time, long time to maintain a bad sitting posture, will be prone to back muscle spasm, may lead to the occurrence of back pain. 2. Biliary tract diseases: when the patient cholecystitis and other diseases, after drinking a lot of alcohol, easy to lead to an acute attack, resulting in pain in the upper right abdomen, involving the back will also cause pain. 3. Pancreatic diseases: If drinking alcohol causes pancreatitis, it can also lead to lower back pain. Patients with back pain after drinking alcohol should go to the hospital in time for relevant examinations, and follow the doctor’s instructions for treatment after a clear diagnosis.