The purposes of international cooperation of Faculty of Agriculture, Yamagata University are to educate Japanese students with a broad outlook on international view point and to train foreign students as graduate students or as trainees of special course. For Japanese students, there are some lectures, e.g. presentation in English and deepen understanding of developing countries, and some programs, e.g. visiting foreign countries as a summer school. Foreign students or foreign trainees affect Japanese students who have little interest in international cooperation. They raise awareness about international cooperation through exchange between foreign and Japanese students daily life. However, we have little history about international cooperation, definite results are not clear yet. To achieve brilliant successes, these programs should be carried out continuously.