Educational ethics is a new subject in educational field. It goat is to integrate pedagogy and ethics, in order to discuss the problems of educational action, educational relationship, educational values, moral education, normative direction, educational responsibilities, vocational moralities and educational ethics. The contents of educational ethics include inquiry into the academic character, the pictures of educational leadership, the value-directed education, the meanings of moral education, norms of educational action, the professional ethics of teacher, the realtionship between teacher and student, the problems of instructional ethics, the concepts of guidance ethics and the factors of school ethics. There are still many problems in educational ethics today, we must resolve theses problems, then can educational ethics get better development, be a vocational ethics of educators and makes contribution for human education. The purpose of this article is to discuss the beginning, definition, contents and problems of educational ethics. They can be regarded as references for development of educational ethics in Taiwan.