Objective To investigate the clinical curative effect of dorsal nerve fasciocutaneous flap in the treatment of children fingertip defect.Methods A total of 20 children (26 fingers)with fingertip defect were chosen as the research objects,and all of them were given the dorsal nerve fasciocutaneous flap surgery within the same finger.The sensory recovery,color,shape and function of the fingers were ob-served.Results All the 26 fingers were survived,and the survival rate was 100%.There were 8 cases of ambient blood circulation crisis 1 to 2 days after the surgery which were eliminated with corresponding treatment.Postoperative follow-up results showed that the sensory re-covery of the skin flap was S2 ~S3 6 months after surgery,and the two-point discrimination (2-PD)was 8 ~14 mm;the sensory recovery of the skin flap was S3 ~S3 +(19 fingers of S3 and 7 fingers of S3 +)12 months after surgery,and the two-point discrimination (2-PD)was 6 ~10 mm;the sensory recovery of the skin flap was S3 +~S4 (20 fingers of S3 +and 6 fingers of S4)12 months after surgery,and the two-point discrimination (2-PD)was 5 ~8 mm.Up to then,the finger shape and color of patients was similar with normal finger,the skin graft donor site was smooth without scar contracture,the finger joint function recovered well,and the distal interphalangeal joint function were normal.Conclusion Treatment of dorsal nerve fasciocutaneous flap repair for children fingertip defect has good clinical effect and it is wor-thy of clinical application.