The growing popularity of the practice-modeof teacher's professional development has been a great challenge to the college-mode. The college-mode is blamed to be separated from the reality of educational practice, which emphasizesthe teaching of theories and generalized rules of practices. The practice-modefocuses on the real situated teaching, training reflective practitioners, and developingpersonal styles of teaching. Theinherent deficiencies in the practice-mode have led to subjectivism or randomin teacher's professionalization, as well as teacher's lack of educational theories and his worship ofpractice. Teacher's professionalization lies in how the teacher uses his philosophy to explore a whole educational practice in cultivating a good personality and great character. Based on the nature of teaching in seeking the meaning and human's well-being, we should re-consider education and teacher's professionalization. Teacherprofessional development should be guidedby educational theories. In reconstructing the college-mode, it's important to reflect the unique nature of educational theory, deepenteacher's understanding of teaching, develop their critical thinkingand form a habit of self-assessment.