Pain in the lower right side of the stomach can be due to many reasons, such as abdominal infections, pelvic infections can be painful, urinary stones can also manifest as pain, if necessary, need to be combined with color ultrasonography of the abdomen and blood tests related to routine blood tests and other tests to clarify. Then, for simple infection, intravenous anti-infection treatment can be chosen, including the application of broad-spectrum penicillin sodium combined with metronidazole, etc. It is also important to observe the changes in abdominal symptoms and signs. If there are obvious signs of peritonitis, pressure pain, rebound pain and muscle tension, surgical treatment by caesarean section should be chosen to remove the primary abdominal infection lesion. For urinary stones, ultrasound examination can also further clarify the diagnosis. The incidence is very high and is related to the usual diet structure, and proper physical exercise and drinking more water in general can promote the discharge of stones.