PPH surgery has a narrow anastomosis and does not usually recover on its own. PPH surgery is a hemorrhoidal mucosal circumcision procedure. After the surgery, some patients may experience stenosis in the anal area, which is a common complication. Patients are often not able to recover on their own, and need early interventional treatment, which is more commonly known as anal dilatation, which is likely to cause difficulty in defecation and may also lead to recurrence of hemorrhoids. PPH surgery if the anastomotic stenosis, usually in the anus slowly inserted into the anal dilator, need to expand the anus for about a month, if too narrow, if necessary, can be surgical release. PPH surgery anastomotic stenosis should be timely consultation, cooperate with the doctor treatment.