Recently, research had demonstrated many approaches to explore the scientific concept development of children. Based on literature study and practical experience, the present study designed a test to measure the maturity status of scientific concept of Taiwanese children. The six problem items of this test had been evaluated by semi-structured interviews with small sample. Also, it had been applied to big scale sample with 12,143 respondents. According to returned open-ended answers and developmental psychology, each problem item was induced to 12 answers at six different cognitive levels. After interviews and data collection, the reliability and validity of each problem item had been approved and the appropriate test population was defined as between grade 3 and grade 8. Based on the returned data, the percentile norms of each grade and the whole population had been calculated. This test could be a normal reference test of scientific concept development for Taiwanese children.