Ku Chien-Yu is a 21-year-old professional football player from TRE. At the international level, he represents Chinese Taipei U20 Women. He plays primarily as a Defender. He stands at 162cm tall and weighs 51kg.

Throughout the AFC U-20 Women's Asian Cup 2023-2024, Ku Chien-Yu featured in 3 matches, averaging 5 tackles, 0.3 interceptions, and 2.7 clearances per game, while blocking 0 shots per game.