During pregnancy, anal bleeding in pregnant women is often caused by anal fissures or hemorrhoids. Considering the peculiarities of pregnancy, it is usually treated with medication and attention is paid to protection in life. Common causes and treatments 1, anal fissure: In late pregnancy with the gradual increase in the size of the uterus, compression leads to slow intestinal peristalsis causing constipation. Constipation in late pregnancy is a relatively common phenomenon, due to constipation patients have difficulty defecating, which can cause damage to the soft tissues around the anus, the emergence of anal fissure will lead to anal bleeding during defecation, bleeding at the same time there will be pain at the anus. Treatment of anal fissures should first be tried non-surgically, with medication to soften the stool and local medication to stop the bleeding and repair the mucosa. If non-surgical means are ineffective, usually for women in late pregnancy, surgical treatment is also generally not possible and requires a comprehensive assessment by a doctor to develop a treatment plan. 2. Hemorrhoids: With the enlargement of the uterus and compression in late pregnancy, this leads to obstruction of venous reflux, causing aggravation of hemorrhoids, which can lead to anal bleeding during defecation, often without obvious pain sensation, but with fresh blood drops. The treatment is also based on topical medication to facilitate the repair of the mucosa. Pregnant women should try to eat a light diet, avoiding spicy and stimulating foods and fried foods, increasing the intake of fruits and vegetables, and keeping bowel movements smooth, together with appropriate exercises to avoid sitting and standing for a long time. Generally, most of the symptoms of anal bleeding can be improved through the above conservative treatment plan.