Abstract: Ten patients with perianal necrotizing fasciitis were admitted to our department from June to December 2016. There were 8 men and 2 women among the patients, aged 42 to 69 years. Early and complete debridement surgery and comprehensive supportive treatment during perioperative period were carried out to quickly stabilize the patient′s overall condition, and wounds were sutured directly or repaired with autologous scalps and or adjacent local random flaps. After debridement, wound areas ranged from 10 cm×8 cm to 54 cm×21 cm, and area of the flap was about 8 cm×5 cm. The donor site of flap was sutured directly. After the operation, all skin grafts and the flap survived, and wounds of all patients healed. During follow-up of six months to one year, there was no recurrence of perianal necrotizing fasciitis, and functions of the involved lower extremities didn′t be influenced.