Taiwan’s children art supplementary school started from about forty years ago, this kind of educational form offers more learning opportunities outside the school. And it’s part of the children art developmental history. But research for this field was few, so I try to build the based-data by using interpretative research in one case in Young Ho, to know more about the phenomenon. The purposes are as following: (1) Understanding the context for the existence of the children art supplementary school. (2) Knowing how children art supplementary school forms their educational point of view and how it works. (3) Analyze what inflect supplementary school’s educational practice. (4) Making suggestions for spreading art education in society.