We investigated the connections of the sociality and emotionality in preschool children through 24 weeks physical education program. We also examed the difference of the sociality and emotionality between physical activity group and without physivcal activity group in preschool. Participants in this survey were 172 children(80 male and 92 female) from two preschool in Inchon City, Korea. The Sociality and Emotionality Development Inventory(the Ministry of Education, 1984) was used in this study. The results obtained from independent group t-test and one way analysis of variance(ANOVA) showed that the physical activity group was significantly higher than the without physical activity group in terms of the sociality and emotionality. The results of this research also showed that the independence for teacher, the locus of control, the reciprocal action with fellows, the sense of security, the accompletion motive, and the curiosity were influenced by the physical education program. In summary, this study showed that physical education program directly effect on children`s sociality and emotionality in preschool.