1. excision of one-stage suture Surgical excision of all diseased tissue, free muscle and skin, and complete suturing of the wound to allow one-stage healing. To eliminate deep intergluteal fissures and their negative pressure and reduce wound dehiscence, hematoma and abscess, Z formation is feasible (Figure 1). It is suitable for cysts and small uninfected sinus tracts on the midline, with a recurrence rate of 0% to 37%. The advantage is that the healing time is short, the scar formed within the intergluteal fissure is soft and mobile, and there is soft tissue between the scar and the sacrum that can tolerate injury. 2.Excision of partial suture Excision of diseased tissues and suture of skin and sacral fascia on both sides of the wound, so that most of the wound heals in one phase and the middle part of the wound is healed by granulation tissue. It is suitable for cases with many sinus openings and sinus tracts, and the effect is the same as excisional one-stage suture, but the healing time is longer. 3.Excisional wound open secondary suture Suitable for cases with severe infection and cases with infected wound incision and drainage occurring in the first stage of suture. 4.Open excisional wound is suitable for cases where the wound is too large to be sutured and the surgery is recurrent. The operation is simple, but the healing period is long and the scar formed is extensive with only a thin layer of epithelium that adheres to the sacrum, and the scar is prone to rupture if there is injury. 5.Pouch suture Excision of the surface part of the sinus wall and the skin of the upper cover, with intestinal thread or absorbable artificial suture wound to promote healing. Satisfactory results can often be seen with careful postoperative care. It is mostly used for unresectable cases or recurrent hidden hair sinuses.