In this paper,we propose a teacher training system that incorporates educational digital portfolios using the Social Networking Service(SNS).We considered the situation in which the student teaching period occurs and focused on the educational benefits of using the SNS to communicate remotely.A challenging issue during the teacher training practicum is ensuring efficient communication and consistent evaluation between the university professor,host school mentor and university student.Our proposed system promotes the development of effective teaching and evaluation methods by sharing knowledge and practice records concerning the teaching practicum.