The teacher specialty development discusses teachers " development under certificating teacher occupation being regarded as a profession . it is perpetual extension and renewal of specialty framework of the teacher on the base of his specialty development consciousness and on supporting of external specialty development background 教师专业发展是在认可教师职业作为一种专业的前提下讨论教师的发展问题的,是以教师自我专业发展意识为根本,以外在的专业发展背景为支持的教师专业结构不断扩充、更新的过程。