In December 1993, when Yamaki was 18 years old, she was selected the Japan national team for 1993 AFC Championship. At this competition, on 4 December, she debuted against Chinese Taipei. She also played at 1994, 1998 Asian Games, 1995 and 1997 AFC Championship. She was a member of Japan for 1995, 1999 World Cup and 1996 Summer Olympics. She played 50 games and scored 3 goals for Japan until 1999.