The purpose of this study is to investigate the sociality development of preliminary teachers at the G University of Education. The results of this study were as follows; First, the preliminary teachers, the college students, showed the highest responsibility of sociality, the boys had higher activity, stability and autonomy than the girls, and the girls had higher responsibility, dominance and sociality than the boys. Second, the difference between the grades of social development was the highest in the first and second graders, the lowest in the fourth graders, but the difference was not significant. The subordinate factors of social development were the responsibility of the first, second, third and fourth graders. Third, the difference of sociability according to students' exercise participation opportunity was the highest when they participated 2-3 times a week, and in this case, the responsibility was the highest. Fourth, the difference in sociality according to the type of exercise participation among students was higher for students who participated in the exercise than those who did not participate in the exercise.