It is possible to change the medication after surgery for mixed hemorrhoids after menstruation, and it is very important to change the medication after menstruation to clean the menstrual blood that has flowed into the wound part of the wound. Most of the wounds of mixed hemorrhoid surgery are not sutured, therefore, if you have menstruation after surgery, not only do you need to change the medication, but it is very important to change the medication during menstruation. Because the menstrual blood may flow to the wound, if you can’t change the dressing in time, there is a possibility of postoperative infection. If menstrual blood flows into the wound, the wound should be cleaned with saline and then sterilized with iodophor. If there is no menstrual blood flowing into the wound, the wound can be sterilized with iodine povidone directly when changing the dressing. The dressing change needs to be carried out by a professional doctor, and if you feel unwell, go to the hospital.