On July 12, 1972, when Fujiguchi was a Keio University student, he debuted for the Japan national team against Cambodia. He played at the 1974 World Cup qualification and the 1976 Asian Cup qualification. In 1978, he was also selected to play for Japan at the 1978 Asian Games and he played three games. That competition was his last game for Japan. He played 26 games and scored 2 goals for Japan until 1978.