There are many causes of pressure pain on the left side of the abdomen in women. Routine urine and blood tests can be done to see if any infection has occurred. Gynecological examination and gynecological ultrasound can also be done to see if there is any restricted pelvic pressure pain, rebound pain, etc. If there is infection, anti-inflammatory treatment should be carried out, and usually drinking more water can help improve the symptoms; 2. Digestive system diseases: such as sigmoid torsion, left-sided inguinal hernia, chronic dysentery, rectal cancer, sigmoid colon cancer, colonic diverticulum and diverticulitis, etc., often accompanied by changes in stool, such as diarrhea, constipation, and stool may have mucus or bloody substances, which can be examined with colonoscopy. Colonoscopy can detect changes of intestinal mucosa congestion and edema. On the basis of active medical treatment, we should pay attention to dietary structure and hygiene, not to overeat, not to drink alcohol, to eat more high-protein, high-calorie and coarse-fiber foods, and to conduct regular review.