Oh started her actress career in 2011 in the film Sin of a Family.

[1] The same year, she gained public attention during the 16th Busan International Film Festival, due to her revealing orange dress.

[2] In 2012, she was cast in a film Marrying the Mafia V,[3] but this fell through.

[4] On 14 September 2020, Oh was found unconscious at her home in Songdo International Business District, Yeonsu, Incheon.

[1][5] She was immediately brought to a nearby hospital,[5] but died of cardiac arrest due to suicide.