A little pain in the left lower abdomen 20 days after the removal of intestinal polyps may be caused by damage to the intestinal mucosa, gastrointestinal dysfunction and other reasons. 1. Damaged intestinal mucosa: after intestinal polyp surgery, may lead to local intestinal mucosa damage, which in turn causes lower left abdominal pain. 2. Gastrointestinal dysfunction: after the intestinal polyp surgery, can lead to human intestinal peristalsis dysfunction, which in turn causes lower left abdominal pain. If the diet is not appropriate, eat spicy, stimulating food will increase the burden on the intestinal tract, intestinal peristalsis function is further impaired, thus leading to the symptoms of lower left abdominal pain. Intestinal polyp removal 20 days after the left lower abdomen a little pain in the patient is recommended to go to the hospital follow-up, clear cause, according to the doctor’s diagnosis for standardized treatment.