Objective To summarize the methods of diagnosis and treatment for sacrococcygeal pilonidal sinus. Methods The processes of diagnosis and treatment for 84 patients with sacrococcygeal pilonidal sinus were analyzed retrospectively. The incision and primary suture with mattress-suture and exterminated dead space was performed in 36 patients （without recurrence and the length of fistulous tract was less than 5 cm）. The sinus resection and incision open surgery with excision of fully pathology tissue and regional treatment with Kangfuxin liquid was performed in 48 patients （with recurrence and the length of fistulous tract was more than 5cm）. Results Two cases were recurrent after half a year and cured with sinus resection and incision open surgery and regional treatment with Kangfuxin liquid in the incision and primary suture group. The others were disposable healing. The healing time in the incision and primary suture group was from 14 to 35d， the mean time was 26d， which in the other group was from 30 to 45d， the mean time was 37d. Follow-up for more than one year， none of recurrence happened. Conclusion Perfecting inspection before surgery， clarifying a diagnosis， choosing a suitable surgical treatment， and perioperative care could cure the disease and extremelyreduce recurrence.