Miyamoto was born in Hiroshima on December 26, 1940. After graduating from Sanyo High School, he joined Yawata Steel (later "Nippon Steel") in 1959. The club won 1964 Emperor's Cup. In 1965, Yawata Steel joined new league Japan Soccer League. In 1967, he was selected "Japanese Footballer of the Year" awards. He retired in 1976. He played 138 games and scored 68 goals in the league. He was selected Best Eleven for 6 years in a row (1966-1971).