The concept of"double-qualified teachers"has limitations in laying the foundation for the professionalism of vocational education teachers and shaping their typological characteristics.With the help of the analytical perspective and tool of pedagogical content knowledge(PCK),a new concept of professional pedagogical knowledge(PPK)is proposed to establish the professional characteristics and type status of vocational education teachers.In order to better promote the generation of PPK of vocational education teachers,the pre-service training should focus on the"barrier crossing"and"knowledge co-creation"of knowledge in different fields,the on-the-job training should emphasize the internal active learning and ex-ternal teaching diagnosis mechanism,the formulation and implementation of vocational education teachers'policies should fully consider the generation of PPK,and future research can focus on the PPK structure and its representation in different professional groups.
pedagogical professional knowledgevocational education teacherprofessionalismepistemologyPCK