If internal hemorrhoids prolapse, it indicates that the hemorrhoidal venous plexus is severely varicose and congested, and the anal cushion has pathologically enlarged and descended, leading to the prolapse of the internal hemorrhoids. The color of prolapsed internal hemorrhoids at the anal opening commonly appears as purple lumps or swellings. If the prolapsed hemorrhoids cannot retract back into the anus, even with manual assistance, this condition may lead to necrosis of the internal hemorrhoids. If necrosis occurs and results in localized thrombosis, the hemorrhoids may turn black. In such cases, prompt surgical treatment is required to prevent necrosis and worsening infection of the hemorrhoids. Surgical options include internal hemorrhoid ligation, PPH (procedure for prolapse and hemorrhoids), or TST (transanal hemorrhoidal dearterialization), as well as the traditional excision and ligation. Postoperatively, consistent wound dressing changes are necessary to promote healing.