In 1956, when Kitaguchi was a Kwansei Gakuin University student, he was selected the Japan national team for 1956 Summer Olympics in Melbourne, but he did not play in the match. In May 1958, he was selected Japan for 1958 Asian Games. At this competition, on May 26, he debuted against Philippines. He played 10 games and scored 1 goal for Japan until 1959.