Most researches considered exercise or sport as leisure behavior and used the leisure constrain theory to explained the exercise situation. Because people simply attributed exercise as leisure. But we still believe that the exercise have some special characteristics which is different from leisure. It will be insufficient to explain all the exercise behavior with leisure aspect. This study based on the leisure theory and developed the Exercise Constrain Scale for university students. Subjects were 172 university students (76 males and 96 females) completed the original Exercise Constrain Scale. Furthermore, the study examined the internal reliability and construct validity of the scale. Results of the analyses indicated that there have five factors for university students’ exercise constrain. That included the interpersonal, body feeling, perceived ability, time and money, and external attraction constrain.