Because the rectum is the last part of the large intestine, sometimes people have constipation or the stool is very rough in this area, which can cause the polyp surface to break and bleed after rubbing against the polyp. Therefore, rectal polyps are often accompanied by blood in the stool or blood after the stool. The effect of bleeding on the body is related to the amount of bleeding. If the amount of bleeding is not too much, just blood in the stool or blood dripping after stool, this situation does not affect the whole blood system of human body too much, and after symptomatic treatment, there should be no big problem. However, because of the dirty environment, the patient may have many times of blood in the stool or a large amount of blood discharge, and even cause the patient to have anemia, which has a more serious impact on the human body. Further, if the polyp becomes malignant, the bleeding will be more frequent than that of benign polyp lesions. Together with the consumption of the tumor itself, the patient may experience anemia, wasting, and weakness. This bleeding may make the patient’s body weaker, which is not good for the patient’s recovery and treatment, and has more serious effects on the human body.