This dissertation examines a suggestion for our education to develop children`s thinking faculty with the intention of meeting the changing society actively and how Dewey`s reflective thought is reflected in a standard of educational value with a scientific method for understanding a changing and developing world toward the viewpoint of children, purpose and contents of education. This study is in several questions as follows. First, what is the character of a reflective thought which J. Dewey`s educational idea has? Second, how is Dewey`s reflective thought reflected in an educational theory? Third, what are suggestions for thinking power of children influencing Dewey`s reflective educational theory? This dissertation has studied how to realize Dewey`s reflective thought through preceding research and bibliographical analysis home and abroad. The point of Dewey`s educational philosophy is experience. Man`s growth and development have completed through experience. Man`s thinking ability is an important element of growth and development. Though we have experienced routines every day, we expect them to change best in quality when they have been proceeded by a reflective thought. A reflective thought is not a principle of educational method but a principle of education as a standard of educational value. It is based on an educational philosophy for the cultivation of thinking power and reflective thought. Dewey`s educational theory based on the reflective thought is influencing the education of children as follows. First, children have to learn a practical knowledge which is utilized through a thinking faculty and be given a variety of routine actions through the sequence between social life and school life. Second, the goal of education should be settled in the process of education with an emphasis on the cultivation of children`s thinking faculty. Third, the contents of education should be presented the methods to develop children`s thinking ability and help induce their thought and thinking process concerning their experience. Fourth, the teachers should have the technique of teaching with several materials, affluent knowledge and activates. And it is necessary to teach their students for the cultivation of children`s thinking power.