Ishii was born on July 7, 1951. After graduating from Chuo University, he joined Japan Soccer League club Furukawa Electric in 1976. The club won the league champions in 1976 and 1985/86. The club also won 1976 Emperor's Cup, 1977, 1982 and 1986 JSL Cup. He retired in 1986. He played 149 games and scored 5 goals in the league. He was selected Best Eleven in 1976.