Usually only one blood in the stool has no effect on the organism. There are many cases of blood in stool, for example, the stool is in a relatively dry state or the intestinal tract is in the stage of acute inflammation and the intestinal mucosa is relatively thin for the time being. 1. Stool dryness may cause slight damage to the mucous membrane of the intestinal tract or anal canal, resulting in blood in the stool, which can be improved after the dryness of the stool is relieved. 2. When a section of the intestine is in acute inflammation stage, the intestinal wall will be in the state of mucosal congestion and edema, resulting in the mucosal wall is relatively weak, the stool is easy to pass through the damage, resulting in blood in stool, once the inflammation disappears, the blood in stool will also disappear. On the whole, a blood in stool will not cause any effect on the body, but when the situation occurs, it is necessary to consult a doctor in time to carry out reasonable and standardized examination and diagnosis and treatment behavior.