Most of the bleeding in the stool during pregnancy is caused by constipation due to the lack of attention to a reasonable diet, resulting in perianal bleeding. In addition, because the uterus increases in size during pregnancy, most pregnant women are prone to combined hemorrhoids, and long-term constipation can aggravate the hemorrhoids and lead to bleeding during defecation. The first thing you need to do is to make sure that you have a good understanding of the cause of the bleeding. 1. constipation: long-term dietary irregularities and lack of attention to the degree of digestibility of food cause constipation, resulting in dry stools and hard lumps, which can damage the intestinal mucosa and cause bleeding when you have a bowel movement. It is recommended to adjust dietary habits, often eat easily digestible food, staple food can choose rice, noodles, etc., and eat more vegetables and fruits to soften the stool; 2, hemorrhoids: due to the gradual increase of the uterus, the pressure on the rectum increases, resulting in venous blood return obstruction, resulting in hemorrhoidal masses, causing the rupture of rectal vessels, which then causes rectal vein bleeding. At this time, you can use a warm water bath to accelerate the flow of obstructed blood to reduce the formation of hemorrhoid masses and reduce the degree and frequency of hemorrhoid attacks; 3. Colorectal lesions: If you bleed more when defecating, it may be caused by lesions in the rectum or colon, such as inflammation, polyps, tumors, etc. At this time, you should promptly consult a doctor for examination and treatment of the cause. You should pay attention to the symptoms of bleeding in the stool during pregnancy and go to the anorectal department or obstetrics department of the hospital for treatment in time. In daily life, you should pay attention to the diet structure, avoid spicy and stimulating food, exercise more and avoid sitting and standing for a long time.