She played for Fujita Tendai SC Mercury.

On June 1, 1988, when Watanabe was 17 years old, she debuted for Japan national team against United States.

She played at 1989 AFC Championship and 1990 Asian Games.

She played 19 games and scored 2 goals for Japan until 1991.

This biographical article related to women's association football in Japan is a stub.