Surgery for internal hemorrhoids is not very painful because anesthesia is required during the procedure. Clinically, the options for anesthesia include local infiltrative anesthesia, spinal anesthesia, and intravenous anesthesia. With such anesthesia, patients do not experience much pain during the surgery, especially with the latter two methods where patients do not feel any pain at all during the procedure. Moreover, surgery for prolapsed internal hemorrhoids primarily involves methods such as internal hemorrhoidal ligation, PPH (Procedure for Prolapse and Hemorrhoids), or TST (Transanal Hemorrhoidal Dearterialization). The surgical wounds are relatively small, so postoperative pain is not very noticeable. Additionally, internal hemorrhoids are located above the dentate line of the anal canal, so if the external hemorrhoids are not severe, the patient will not experience significant pain after surgery, mainly feeling a sense of distension.