Ｔ型环穿透直肠引起便秘临床罕见，报告如下。某女，３１岁，２年前上Ｔ型节育环一枚。上环后月经正常，无再孕史，二便畅行。近半月时有便血，量不多，干结，２～３ｄ／次。排出困难。就诊时自觉每次大便停留在直肠不能下移，坠胀，腹痛。查体：肛缘平整，直肠未见异常，指诊 T-ring through the rectum causes constipation clinically rare, the report is as follows. A woman, 31 years old, 2 years ago on a T-IUD. After the ring menstruation normal, no history of pregnancy, two will be smooth. Nearly half a month when there is blood in the stool, small amount, dry knot, 2 ~ 3d / times. Difficult to discharge. Conscious of each stool to stay in the rectum can not move down, bulge, abdominal pain. Physical examination: anal margin formation, no abnormal rectum, referral