A relationship between eating behavior and attitude to uncleanness of daily life in female college students and female high school students was statistically studied by method of questionnaire. Following results were obtained; 1)  The fundamental factor of attitude to uncleanness on daily life was “hating to make use of goods placed public utility”. 2)  274 subjects were classified into three groups by using their principal component scores. 3)  In attitude to uncleanness, 44 subjects who showed over minus 0.9 score were liable to hate hanging on to straps of trains and buses, touching door knobs and keyboards of personal computers, using toilet seats, sofas and mules in public utility. On the other hand, 41 subjects who showed over plus 0.9 score were not. 4)  In eating behavior, they who showed over minus 0.9 score were liable to pay attention to the dirt of tablewares and tables at the time of eating out. But they who showed over plus 0.9 score were not.   From above results, it was speculated their attitude to uncleanness on daily life closely related eating behavior of female college students and female high school students.