Back pain after drinking may be caused by back fasciitis, digestive system diseases, cardiovascular system diseases and other factors. 1. Dorsal Fasciitis: Dorsal fasciitis and supraspinous ligamentitis caused by long-term strain on the back can cause local inflammation to worsen after drinking alcohol, resulting in symptoms of back pain. 2. Digestive system diseases: after drinking a lot of alcohol, gastric hemorrhage, pancreatitis and other digestive system diseases may occur, and sometimes back pain may occur. 3. Cardiovascular diseases: Drinking alcohol can trigger angina pectoris, myocardial infarction and other cardiovascular diseases, which can cause radiating pain in the back and shoulders. Drinking back pain may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.