This study investigated that the effects of an integration of art and science in outdoor activities on children’s scientific capability. The research questions in this study are following: How will an integration of art and science in outdoor activities affect children’s scientific capability? 48 children(5 years old) who are attending to two public kindergartens located in the Daegu Metropolitan City in South Korea were participated in this study. An experimental group consisted of the 24 children from S kindergarten and a control group that comprised of the 24 children from D kindergarten. The experimental group experienced the integration of art and science in outdoor activities from 5-May-2016 to 15-July-2016(for 10 weeks). This study employed a kinds of checklists proposed by Cho(2015) to measure scientific capacity of children. To verify the research questions, the different scores between each group’s pre-test and post-test were calculated, and then t-test was conducted about average of incremental scores. The major findings through this study are as follows: scientific capability in the experimental group improved more than that of in the control group(p<.05). This study demonstrated that the integration of art and science in outdoor activities has a positive effect on 5-year-old children’s scientific capability.