If men have back pain after waking up from sleep, there are usually several factors as follows: 1. factors in gastroenterology; 2. factors in general surgery; 3. factors in urology; 4. and finally, factors in orthopedic surgery. First of all, if men wake up with back pain after sleep, there are often several categories in gastroenterology such as gastroenteritis, cholecystitis, pancreatitis and appendicitis. Secondly, diseases such as general surgery can include intestinal obstruction, intestinal stricture, gastrointestinal perforation, peritonitis and other conditions. Then urological diseases cause back pain after waking up, the most common being renal ureteral stones, especially stones embedded in the 1st and 3rd strictures, especially with intense and obvious back pain after waking up. Finally, orthopedic surgery diseases can include lumbar disc herniation, lumbar disc bulge and lumbar muscle strain, all of which can cause low back pain after waking up.