Abstract: To reflect on “Doing what” is to consider on the routine educational activities for a teacher. This reflection and thinking is beneficial for teachers to improve their capabilities and to understand the effects of their action; but it is not valuable for in-depth reflectivity because “familiarity” “common sense” and “self-evidence” might mean ignorance and can not lead to know the truth. “Knowing what to do” is self-reflection on one’s “familiarity”, “common sense” and critical thinking on one’s action and views in order to know the reality and to behavior appropriately. This is a kind of premise reflection. It means that the teachers should hold self-critique spirit and reflect on the “unaware premise” of their action, struggle rationally to avoid falling into an active conspirator. Meanwhile, the overemphasis on efficiency, specificity and instruments and the dominance of scientific rationale has caused crisis of teacher education. To reconstruct teachers’ premise reflection, teachers should be well prepared with integrative knowledge of human-being’s happiness and full development. In this sense, teacher education is similar to liberal education.

Key words: teachers&rsquo, reflection, crisis, reconstruction, teachers&rsquo, development