a three - dimensional measurement system for a marked line for adhering a sole to an upper and a three - dimensional measurement method therefor . a three - dimensional structure of a sole inner surface is measured automatically using a three - dimensional scanner , so as to form three - dimensional inner surface data of the sole ; and by conducting operation processing on the three - dimensional inner surface data of the sole and three - dimensional surface data of the upper , a contour line of the sole inner surface is transferred to an upper lower surface , so as to form a processing marked line of the upper , thereby improving the operation efficiency of adhering the sole to the upper .