She is known for having performed theme songs for anime shows such as Prétear, Ai Yori Aoshi, the Ah!

Ishida entered the entertainment industry after winning a contest to become an anime song singer in 1990.

At the time her name was written as 石田よう子, but she changed it to the current spelling (石田燿子) after signing up with record label Pioneer LDC (now Geneon Universal Entertainment).

[citation needed] She has since moved back to her original label, Nippon Columbia.

In 2002, Ishida gave her first performance in the United States and returned in 2015 for the Lantis Festival in Las Vegas.