In this paper the authors investigated the fundamental data which were necessary for estimation of the optimum number of the fixtures in a lavatory of the single-purpose soccer stadium. The sanitary fixture usage of the audience of a pro-soccer game at a stadium-K were surveyed actually by means of the electric methods. The results are as follows. The number of men was same to female in audience. The waiting line of lavatory during the intermission had been left after the second half of the game had started, therefore some of audience had been disturbed to watch the game. Lack of the sanitary fixture in the female lavatory had caused waiting line during this investigation period. But the occupated period on each fixture was similar to the result of the previous investigation.
