If internal hemorrhoids prolapse and form thrombosis, it indicates poor local blood circulation in the internal hemorrhoids and damage to the hemorrhoidal veins, leading to thrombosis. Such thrombosis will not shrink and will cause a significant foreign body sensation in the anus and anal distension pain. For cases where internal hemorrhoids prolapse and form thrombosis, it is crucial to go to the hospital's colorectal surgery department for timely surgical treatment. Surgical options include internal hemorrhoidal banding, internal hemorrhoidectomy, or TST. Postoperatively, patients should use anal cleansers and medications like golden ointment and red oil ointment gauze for dressing changes to promote wound healing. Furthermore, patients should be cautious with their diet, avoiding spicy, stimulating, and dry foods to prevent irritation to the wound, which could lead to infection, inflammation, or swelling, and thus significant pain. Additionally, patients should maintain hygiene around the anal area and wear loose, breathable cotton underwear.