Oh Hye-soo was a student of Korea National University of Arts and she majored in theater.
[2] She was also a promising savate boxing athele in Gyeonggi Province during her younger years.
[3] Oh made her acting debut in the 2017 web-drama Seventeen, and later earned roles in web series Flower-like Ending in 2018 and in 2019 Cat Bartender and The Story of Yohan Kim.
[2] Oh gained attention for her portrayal of school bullying victim Min Eun-ji from All of Us Are Dead in 2022.
She made her cameo appearance in Extraordinary Attorney Woo as Shin Hye-young, an intellectually disabled rape victim.