The objective of this study is to focus on exploring the reform of future teacher training policy in Japan. The Ministry of Education, Culture, Sports, Science and Technology and related academic papers published by experts and scholars were mainly adopted in order to analyze and attempt to explore the Japan's reform of teacher training policy, which shall serve as a reference for Taiwan's teacher training policy planning. First, the plights and crisis currently confronting the teacher training policy in Japan were discussed, coupled with the content established in the teacher training system reform undertaken pursuant to the 7th Education Renewal Implementation Meeting statements and following the revision of the Special Act for Education Personnel articles. The study findings shows that in view of Japan's teacher training policy during the teacher training and appointment examination process, a series of relevant measures were rigorously taken. At education venues, due to teachers' work overload and a large quantity of teachers retiring, a series of teacher training system reforms were undertaken mainly for the purpose of training high-quality teachers. Therefore, the Japanese government adopted encouragement-based workshops featuring assistance to teachers through comprehensive career development and planning, so as to highlight the characteristic publicity of Japan's teacher training policy. In addition, based on Japan's teacher training policy, it shows that both teacher training curriculums and national teacher quality enhancement indicator formulation. After the country first formulated general teacher training indicators, the prefectures (equivalent of counties and cities in Taiwan) formulated specific teacher training indicators and the conference establish a communication platform to serve as an important milestone in the reform of the teacher training policy.