The purpose of this study was to investigate 1000 National Cheng kung University (N.C.K.U.)students whom have participated in the 「physical fitness passport project in the academic year of 2000」about their exercise behaviors, exercise attitudes and exercise knowledge. Subjects were asked to complete questionnaires and the results were followed: 1. The major sources of students' exercise knowledge were from the television, the video and the radio. Followed by friends. family and classmates.Then from the teachers. 2. 84.3% of the subjects exercise after school and average exercise time was 43 minutes. 3. Exercises subjects usually do were riding bicycle, playing basketball, playing badminton, running and playing volleyball. 4. There was a significant difference between male and female subjects exercise after school. Male subjects exercise more than female subject (p<.05). 5. Walk to school, climbing stairs can increase physical fitness and release stress. There is no different in sex (p>.05).