PURPOSE: This study was to assess the amount of overgrowth and convenience after external fixation of pediatric femoral fracture. MATERIALS AND METHODS: Followed-up more than 18 months were 20 childrens treated with external fixator for femoral fracture(mean follow-up periods: 25.5 months). Mean age was 7.15 years(range: 4-11 years). End to end apposition was done on the closed reduction. Evaluation of the result was done with five parameters; clinical results, radiological results, parents`satisfaction with questionnaire, hospital fee and complications. RESULTS: Clincal results were not any disability in all cases. No angulation deformity was estimated in all cases, and overgrowth was estimated average 4.8mm (range: -1 ~ 13mm). Answer for questionnaire was revealed satisfactory result. Total hospital fee was average 831 thousand won in external fixator group, and average 289 thousand won in treated group with cast. CONCLUSION: We propose that external fixation in closed femoral shaft fractures of children could be a rational alternative mode of therapy, because it has excellent clinical & radiological results and parents were satisfied with its convenience & final results. Total hospital fee was statistically higher in external fixator group.