Fresh blood in the stool after stent surgery may be due to the use of aspirin, or may be due to the disease that occurs in the anus. After stent surgery, in order to prevent the formation of blood clots, usually need to take anti-platelet coagulation drugs, such as aspirin, etc. After taking these drugs, it will affect the coagulation function, which will easily lead to bleeding, such as fresh blood in the stool. If there are diseases in the anus itself, such as anal fissure, internal hemorrhoids, etc., these diseases themselves can lead to blood in the stool, usually fresh blood, after stent surgery, if the above diseases attack, there will be fresh blood in the stool. It is recommended that the patient go to the hospital, can improve the anoscopy and other tests, usually can clarify the cause, and then can be treated accordingly.