In this paper, we estimated that how students understand and grasp an architectural drawing in the light of period of learning architecture, procedure of grasping the drawing, and method by eye fixation behavior. 1) The new students can not understand architectural drawings easily. But, it was objectively confirmed that the more time the students spend on their specialized studies, the more accurately they understand them. 2) The glance tracks (eye fixation place) of lower-grade students tend to concentrate on a specific part. In contrast, upper-grade students tend to watch them uniformly. 3) Lower-grade students understand the entire drawing by gathering partial information. And upper-grade students understand the detail after having caught the whole information. We observed such a tendency.
