Minimally invasive treatment is available for anal fistula surgery, but there are certain indications. Generally low simple anal fistula can choose HCPT minimally invasive surgical treatment. HCPT operation has a high-frequency capacitive field treatment function, high-frequency electric knife hemostasis function. This minimally invasive painless treatment is the use of rectal fiberscope into the anus, through the monitor directly on the anal fistula of the inner mouth of the minimally invasive electrocoagulation, so that the inner mouth of the anal fistula dry knot closed, and then clean the fistula of the anal fistula, and then block the source of the infection of the anal fistula, to achieve the purpose of the cure of the anal fistula. This minimally invasive surgery is characterized by a small incision, light pain, intraoperative bleeding, or even no bleeding, fast healing, to avoid sequelae and complications, and is not easy to recur. The high anal fistula complex anal fistula and rectal submucosal fistula, because of the complexity of the fistula walk, and even penetrate the anus muscle, then can not be minimally invasive surgical treatment, it is recommended to perform a fistula incision endotomy hanging line.