This study was using pedometer to investigate the differences of college students' physical education class and regular P.E. class. The objects were thirty Teh-ming Business Vocational School females students from interest-based and regular P.E. calsses. After three weeks testing, the grades were obtained by setting up the PEⅡ files and statistical analysising the SPSS/PC software. Two results were addressed. I.In the three weeks, the physcial activities of interest-based P.E. calss were over 1500 steps. There was a significant standard (p<0.05） between interest-based and regular P.E. calsses in there first hours during the continuous three weeks. In the second hours of three weeks, interest-based and regular P.E. calsses had a meaningful standard （p<0.001）. Next, comparing the results of two classes in the second hours of the last week, both of this two grop had a significant standard（p<0.05）. Ⅱ.In the every first hour of continuous three weeks, the physical activity （setp/min）of the interest-based P.E. class was 32.6 step/min higher then the regular class 27.0 step/min. On the other hand of every second hour in three weeks, the physical activity of the interest-based class 35.9 step/min was also higher then the regular class 27.5 step/min. 1.Under the same sports, there were differences of physical activities between the interest-based P.E. class and regular P.E. class. 2.The results of this study explained that Teh-mings P.E. classes not only base on the students' needs, but enhance their participations to reach the goal of lifelong exercises. 3.Referring to the physical activity of regular P.E. class, this study was looking forward to offering interest-based P.E. classes in the Teh-ming Physical Education Classes.