Patient: I had PPH surgery a month ago, and the doctor said it was fine, but when I have a bowel movement, it is extremely difficult because the head of the stool is often hard, and I feel that the opening of the anus has become smaller. Is there anything I can do? The first People’s Hospital of Guangzhou, the Department of Anorectal Surgery Zhang Yan: your case may have two causes: 1, PPH surgery due to anastomotic infection scar excessive caused by the anal opening narrow, defecation difficulties, 2, itself there are various factors of constipation, such as slow peristalsis, pelvic floor muscle spasm, sigmoid colon too long, intestinal adhesions, visceral prolapse, etc., please go to the hospital for further examination to exclude the above factors, solution: first according to The first treatment is based on the narrowing of the anal opening, generally using the method of anal dilation and laxative internal medication for three months, and then choose the surgical method if it is not effective.