The more superficial perianal abscess rubbing ichthyol is usually applied for about 3-4 days will be pus, so that the internal perianal pus breaks through its own epidermis and drains out of the body. However, it is not effective for deep abscesses. Fish petrolatum ointment is a dermatologic agent that has anti-inflammatory, antiseptic, and decongestive properties for all types of skin inflammation or abscesses, and can help to pull out the pus. When there is a relatively superficial perianal abscess, applying ichthyol ointment to the skin surface of the perianal abscess can effectively inhibit the bacteria in the suppurating area and promote the discharge of pus from the perianal skin, and the pus can be discharged after about 3 to 4 days of application in general. But when the abscess is deeper, the use of the drug is generally ineffective. It is recommended to treat abscesses in the perianal area with medication under the guidance of a doctor, and not blindly use medication on your own. Although ichthyol can treat superficial perianal abscesses, it has a certain degree of irritation and may cause burning and stinging sensation after application, which should be discontinued to avoid damage to the skin.