I will introduce the precautions for changing medicine in the outline of the first few days after surgery, and I hope it will help you to overcome the disease and recover soon! On the day of surgery, medication is usually not changed. If there is fresh blood flowing out in large amount. Need to press the pager to notify the medical staff. If there is gauze, with dark red blood, it is normal, no need to panic, no need to deal with it. On the first day after surgery, a dressing change is required. The main thing is to change the gauze with stale blood, the gauze strip inside the wound is usually not taken, if taken, the possibility of bleeding is higher. On the second day after surgery, the gauze filled with hemostatic gauze inside the wound is to be removed today, partially or completely. Because the gauze is tightly adhered to the wound muscle, it will be painful to remove. It is recommended that the prescribed herbal decoction be washed externally in a sitz bath before changing the medication and soaked softly. Take one capsule of Daphne painkiller orally, which will take effect after half an hour. As painkillers are antipyretic and analgesic, they can irritate the stomach, so it is recommended to take them after eating. From the third to ten days after surgery, high complex perianal abscess or anal fistula may need saline flushing because of the normal secretion of the wound. The number of drug changes, 1~2 times is appropriate. If you have a bowel movement at noon or in the afternoon, or if the gauze is completely wet. You can change it again at 9 pm. Too many dressing changes can damage the granulation and be detrimental to wound healing. Too little dressing change or no dressing change, the wound is prone to bridge-type pseudo-healing, which is powerful and requires surgery. Ten days after surgery until the wound is healed. As the wound slowly heals, you will notice that the discharge is gradually decreasing and the pain is lessening. I will tell you to discharge or reduce the number of dressing changes.