Patients who bleed when they take a hard stool may have clinical symptoms caused by anal fissure or hemorrhoids, as follows: 1. Anal fissure: Patients with obvious anal pain symptoms during defecation should first be considered as anal fissure, bleeding bright red in color, bleeding volume is on the low side, triggered by skin cracking of the anal canal, which can be seen in the front, middle or back of the anal fissure fissure. 2. Hemorrhoids: Patients with no obvious pain during defecation The symptoms should first be considered hemorrhoids, hemorrhoid patients in the process of defecation difficulties, feces may squeeze the hemorrhoid nucleus, resulting in the rupture of blood vessels within the nucleus and cause bleeding, bleeding bright red color, bleeding volume is large, can be jet bleeding, serious will lead to patients with anemia. Therefore, when the patient has blood in the stool symptoms need to go to the hospital, clear the cause before taking the appropriate treatment.