Difficulty and pain in defecation 12 days after mixed hemorrhoid surgery may be due to unhealed wound, scar tissue of the wound, and dry stool. 1. The wound is not healed: 12 days after the operation, the wound may not be healed, and the pain caused by the stool scratching the wound in the process of defecation, the pain is severe and refuses to defecate. 2. Wound scar tissue: As the surgical wound heals, localized scar formation and even anal stenosis occurs, making defecation difficult and painful. 3. Dry stool: Due to the pain of the wound after surgery, the patient refuses to defecate, and the poor dietary structure after surgery causes constipation, which leads to difficulty in defecation and pain in defecation. After surgery, eat more crude fiber food, drink more water, appropriate exercise, defecate on time, keep the stool smooth, if necessary, go to the hospital to let the professional doctor to check, to clarify the specific causes, and give early improvement or corresponding treatment treatment.