[7] In 2012, Roh appeared in various dramas such as Dream High 2, Operation Proposal, Full House Take 2, The King's Doctor and Cheer Up, Mr. Kim!.

[13] In 2015, Roh appeared in the action thriller film The Phone as Ko Kyung-rim, the daughter of Son Hyun-joo's and Uhm Ji-won's characters.

[16] In 2017, Roh portrayed Oh Ha-ra in the drama Live Up to Your Name[17] and appeared as a teen counterpart of Jung Ryeo-won, who played Ma Yi-deum in Witch at Court.

[20] She also starred in the independent film A Haunting Hitchhike, the coming-of-age story of a 16-year-old girl searching for her mother who abandoned her after her father was diagnosed with terminal cancer.

[citation needed] She also appeared in the movie The Day I Died: Unclosed Case as Jung Se-jin, a girl who is believed to have disappeared from a cliff during a storm after leaving a suicide note.

[25] In 2021, Roh was cast in the role of Seo Ji-min, a popular cheerleader and famous student at Seoyeon University in the KBS drama Dear.M.

[29] In 2022 she also appeared in the movie I Want to Know Your Parents as Nam Ji-ho, a girl who witnesses a violent incident involving students and testifies in court.

She appeared in the movie Badland Hunters as Han Su-na[31] and took on the lead role of Jung Jae-i, the eldest daughter of the Jaeyul Group, in the drama Hierarchy.