Anal leakage is a fistula formed when the rectum and anal canal are connected to the surrounding skin. It usually consists of a primary internal orifice, a fistula, and a secondary external orifice, but there are also cases with only an internal or external orifice. The internal orifice is primary and most of them are in the anal sinus at the dentate line of the anal canal; the external orifice is secondary and is in the skin around the anal canal, often more than one. Most anal leaks are the sequelae of perianorectal abscesses. It is comparable to a Western medicine anal fistula, which is characterized by recurrent local pus flow, pain, and itching as the main symptoms, and can be palpated or probed to the leaky channel leading to the rectum. The abscess around the anus and rectum is ulcerated, but the remaining toxins are not exhausted, and the nodules do not disperse, the blood flow is not smooth, the sore does not fit, and it becomes a leak over time; there are also deficiencies in the lungs and spleen, and the evil multiplies the lower position. The leaky tube does not close for a long time, and the evil energy stays with the sore, consuming the qi and blood. Diagnosis 1. Intermittent or persistent pus flowing from the anus, not closing for a long time. 2. Generally, there is no pain and only a feeling of swelling at the anal opening. If the external opening is temporarily closed and pus accumulates, local pain may appear, and systemic symptoms such as fever and chills may also occur. In addition, pus impregnation may cause itching of the skin around the anus, or perianal eczema. 3.Anal visual inspection can see the external opening, and those with small raised external opening are mostly septic; those with larger external opening, depression, dark purple surrounding skin and subcutaneous penetration should be considered complex or tuberculous anal leakage. Low anal leakage can be palpated under the skin of the perianal area, while high or tuberculous leakage is usually not easily palpable. Low simple anal fistula, low complex anal fistula, high simple anal fistula, high complex anal fistula. V. Treatment Surgery is the main treatment. Preventive care 1.Appropriate work and rest, do not eat spicy and stimulating food. 2.Keep the anus clean frequently and develop good hygiene habits. 3.If perianal abscess is found, early incision and drainage of pus is advisable, and one-time surgical treatment can prevent posterior anal leakage. 4.Patients with anal leakage should be treated as early as possible to avoid the accumulation of pus and poor excretion caused by blockage of the external door, which can trigger new branches. 5.Post-operative bleeding should be prevented, and it is advisable to change medication carefully to prevent pseudo-glueing of the wound (bridge healing) and anal leakage from healing.