Hemorrhoid surgery 16 days after the stool with blood clots, most consider the incision is not completely healed, or constipation, diarrhea, etc. lead to rupture of the incision in the initial healing bleeding. 1. not completely healed: due to the patient’s hemorrhoid condition is more serious, the corresponding surgical incision range is larger, the wound healing time is longer, and hemorrhoids for the open incision, normal defecation can be stimulated by the wound to appear slight bleeding. 2. incision rupture bleeding: constipation leads to dry hard stool repeatedly rubbing the initial healing of the incision, the patient is prone to stool with blood clots; diarrhea feces will also be rapid and repeated impact on the incision, resulting in incision rupture bleeding. Therefore, it is recommended that patients who still have blood in the stool half a month after the surgery should go to the hospital for timely examination to identify the cause of the bleeding, and then give reasonable treatment to promote the normal healing of the wound.