This study was to provide the fundamental data for a scientific and rational clothing construction by investigating the variation of the upper body surface with the use of the method of Surgical tape. The subject were 3 middle elementary schoolboys classified standard somatotype, and arm-movements were consisted of 6 types. The statistical analyses used in this study were mean, standard deviation and the ANOVA and LSD procedure. Shoulder point was moved to be the inside or upside and the shape of the armhole-line was differently changed as the arm-movement become larger. By moving to upside of the anterior armpit point, posterior armpit point and armpit point, the increase of the side seam length and the ascent of the line of width between armpits were distinct. And by arm-movements, in the items of horizontal, front neck base girth, back upper bust girth, back bust girth and back waist girth were increased and the other standard lines were apt to be decreased. In the items of vertical, all standard lines of front side and side seam length showed increased, back waist length and back length showed decreased. The variation of armhole was indefinite. In the rate of the variation, the shoulder length showed the maximum rate of contraction by 41.3%, decreasing 3.7 cm in $180^{circ}$ degrees, and the side seam length showed the maximum rate of expansion by 60.6%, increasing 8.97 cm in the same degrees.