Vertexes arraying is the fundamental factor which influenced the qualities and efficiency in auto-body smoothing. Favorable vertexes arraying not only can make the surfaces satisfy styling but also improve quality and efficiency of surfaces smoothing. According to the expressing methods and matched condition of surfaces the vertexes arraying rules of auto-body surfaces are given. And the rules are validated by examples. The result verified that rational vertexes arraying can improve the quality and efficiency in auto-body surfaces smoothing.