Abstract: From Dec. 1985, 32 cases of pediatric skull defect were treated- 24 cases had been follwed up and better results were gained. The original defect areas had good outlook and no local introcession.The donor areas had the same shapes with the opposite sides- The lower limbs moved as normal and the pa-tients could study and work normally. The X-ray films showed that the transplanted b0nes were alivedand fused with the skullbone in part- The donor areas had 0steoporosis and new bone gr0wth. The authorsconsidered that ilial bone was the most suitable aut0graft- lts characters are that it has excellent shape with-out area limit, distorti0n, aging and l0cal dropsy which can occur when man-made materials are applied.