The aim of this thesis is to study historically teacher training policy under Japanese imperialism. To attain the above objective, the educational policy, the teacher training system, the teacher education process, the teacher qualification for private school, the system of teacher candidate's qualification, and in service education are analysed and studied. 'Korean Law of Education' was amended four by japan imperialists who make an invasion upon Korea is 1910 in order to make the Korean assimilate the Japanese. Along with the Korean Law of Education they tried to make the Koreans into the Japanese through colonialization education such as assimilationist education and obscurantist education aiming at 'making imperial subjects', 'being subject to japan', and 'being on body of japan and Korea' Japan colonial education was exploited for propaganda purposes for making assimilation policy realized. Korean teachers were forced to be in charge of 'the flagman of colonization' through the assimlation policy education by making imperial subject and supplying Koreans with Japanese. It seemed that teacher training project in Korea was that teacher was molded with intention of being as a good peformer of colonial policy and as a leader of assimilation policy.