If you have edema after hemorrhoid surgery, you can use Chinese herbs or 1:5000 potassium permanganate for anal fumigation, sitz bath, apply hemorrhoid cream, use hemorrhoid suppositories for anal nasalization, take oral medications to improve perianal blood circulation and eliminate edema, such as Diosmin tablets or Mizling, and take oral anti-inflammatory drugs or intravenous antibiotics if you have inflammation. The edema can be treated with infrared radiation or microwave therapy, and after treatment, the edema will gradually reduce and disappear. Oedema after hemorrhoid surgery is usually caused by poor wound drainage, wound infection, or constipation and forceful bowel movements after surgery. After hemorrhoid surgery, you should eat a reasonable diet, eat more fiber-rich foods, eat more fresh vegetables and fruits, drink more water, and get out of bed properly. In addition, you should keep the anal area clean and hygienic, clean the anus after the stool, and develop the habit of regular bowel movements every day to keep the bowels open and prevent constipation.