After hemorrhoid surgery crashing stool not finished, may be due to wound irritation, wound infection, fecal residue. 1. When doing hemorrhoid surgery, there will be wounds in the anus, the wounds can not be sutured, the wounds are in an open state, the wounds will have an irritating effect on the rectum, the local feeling of swelling and incomplete defecation will occur. 2. After the hemorrhoid surgery, due to fecal contamination and other reasons, the wound may be infected, the local redness, swelling and pain, and there will be a feeling of swelling, the infection will stimulate intestinal peristalsis to speed up, manifested in frequent bowel movements and incomplete bowel movements. 3. Fecal residue: patients may not dare to defecate due to pain after surgery, resulting in incomplete bowel movement. It is recommended to go to the regular medical institutions, need to improve the relevant examination, such as anoscopy, stool routine, etc., usually can clarify the cause.