How long does it take for the hanging black line to fall off after anal abscess surgery, there is no fixed time, about a week to half a month or so time. Anal abscess, also known as perirectal anal canal abscess, is an acute purulent infection and abscess formation in the soft tissues around the rectum and anal canal or its surrounding interstitial space, with symptoms such as local redness, swelling, heat, pain or generalized fever. This disease is caused by the obstruction of the anal glands and the formation of abscesses caused by purulent germs. It can also be seen in anal fissure, internal hemorrhoids and other post-injection treatments, sepsis, perianal skin infections, anemia, diabetes, and so on. Hanging black line after anal abscess surgery shedding time is not fixed, generally in a week to half a month or so time, mainly with the size of the abscess cavity, the internal mouth high and low factors related to the abscess cavity small hanging line height low shedding time is relatively fast, the pus cavity range of large hanging line height is relatively high hanging line shedding time is long, probably in half a month or so. Hanging black line after anal abscess surgery, in the change of medicine care to observe the wound healing, such as no local anomalies, the recovery of the condition will be healed as expected, if in doubt can consult the competent doctor, and actively cooperate with the treatment. After anal abscess surgery, care under doctor’s guidance to promote wound healing; pay attention to local hygiene during the period to avoid complications such as infection or pseudo healing.