This aims to analyze the characteristics of exhibitions planning about the conversion of sue in modern architectural properties of one open space type. in this study, 13 cases of one open space type were analyzed about the circulation, width of showroom, and exhibition layout. The result are as follows. First, among the 13 cases, 10 cases are the simple circulation and the rests are the free circulation. Second, in the width of showroom, 11 cases are above 5,500mm and the rests are below 5,500mm. Finally, it is found that the minimum width of showroom for one side wall display is necessary to 1,970~2,220mm, 3,020~3,500mm for two side wall display, and 4,990~5,740mm for island showcase display.