The purpose of this study is to verify the effect of young children’s VPE program during day care outdoor playtime in their self-regulation. Subjects of the study were 146 young children aged 3 to 5 years old, who were currently enrolled in corporate day care center, of which 74 were assigned to the experimental group, and 72 were assigned to the control group. This study was performed with untreated control group design with pretest and post-test. The effect of this program was confirmed using the ‘self-regulation scale for young children’ tool. The results are as follows: First, VPE program during outdoor playtime enhanced self-regulation in 3 to 5 year olds. Second, the effect of VPE program during outdoor playtime differed by the age of the young children. Based on these results, it is recommended that early childhood education institutions apply VPE program during outdoor playtime to enhance self-regulation in young children.