Because of educational reform and lifelong-learning society, the present teachers must deal with new challenge they never did before to meet the demand of career development. But seldom of them have complete conception in the field of career development planning, how to provide further conception and direction will be the most important goal to the teacher. From the view of career development, the paper discussed the theory of teacher's career development at first. Then, it analyzed characters of teacher's job and the step of teacher career planning. Finally, we will offer some suggestion of teacher career planning. We hope the result of the paper is useful to the teachers.