Orientation of place is ability for people's daily life. In order to know the reasons for distortion of orientation, we contract the real plan and sketches draw by subjects after visiting a museum exhibition hall. In their sketches, subjects are asked to shown 6 places of painting visited. Some places in different floor are also asked to be shown in subjects' sketches. Based on the sketches, regarding on the orientation of places in same floor, it is found that : 1) Length of walking, winding road and unit of path choice have effect on orientation of place; 2) In a closed place, distortion of orientation occurs frequently; 3) A path with continues painting has effect on visitors' orientation. Regarding on the orientation of places in different floor it is found that if people have not noticed allocentric orientational systems, distortion of orientation is easy to occur. As a conclusion, to design a legible exhibition space, opening space, space without exhibition, wellhole style or windows help people orient themselves.
