Though 3D body scanning system is most developed system for achieving body data, there are some scanning dead angles when body is scanned. Based on the scanning file produced by Telmat 3D body scanner, the structure of scanning file was introduced and model algorithm was analyzed. Holes in model were produced because of scanning dead angles, where were on the side of arms, on the side of legs, on the side of upper body, in the side of arms and in the side of legs. A 3D system was developed to automatically read the scanning file and reconstruct body model in it. At the same time holes can be automatic identified and repaired by this system. Then the model repaired was compared to the initial model produced by Telmat system and to confirm the integrality. The algorithm of program is fit to 3D scanning file from all kinds of body scanner system, which holes were produced. The automatic system perfected 3D scanning system and overcome the difficulty produced by the hardware in scanning system.