This study is to prospect a bilateral relation between Myanmar and ASEAN focusing on regional and international change based on realism and constructivism. The traditional policy of ASEAN, ASEAN Way, is abided by in the first term which is from foundation of ASEAN to mid-1990's. In the second term, from Myanmar's join into ASEAN in 1997 to 2004, realism and constructivism is coexisted. From 2004 to present, correspond to the third term, constructivism is a crucial point to resolve a bilateral relation. ASEAN's policy toward Myanmar seems to be totally changed, however, there is different perspective of ASEAN compared to policy of western countries. Therefore, the bilateral relation between Myanmar and ASEAN will be pursuit a speciality like localize a democratic norm and universal human rights based on ASEAN Way, while constructive norm is diffused by local people at the moment.