Oh made his musical debut in 2006 and has since built up his acting skills in a number of plays and television drama.

The story is about a bank clerk in his mid-30s in his household uniform who meets by chance at a fishing spot and Oh Beom-ha, a restaurant owner in his 60s, quarreling and coming to understand each other.

[5] He was discovered onstage by director Yoo Je-won who offered him to audition for role in his television drama.

He co-starred as kitchen assistant Choi Ji-woong in tvN fantasy drama series Oh My Ghost (2015), starring Jo Jung-suk, Park Bo-young, Kim Seul-gi and Kwak Si-yang.

[8] In 2021, Oh did special appearance in tvN drama series Hometown Cha-Cha-Cha as Park Jung-woo, Hong Du-sik's friend whom he met during college days.