He is well-known for his role as young Yang Myung in Moon Embracing the Sun (2012), Song Man-bo in Rooftop Prince (2012), Jung Joo-hwan in The Beauty Inside (2018), Jinmichae/Geum Jin-mi in Extraordinary You (2019), and Imugi in Tale of the Nine Tailed (2020).

[4] He wanted to become a professional soccer player, but eventually upon entering high school, he came to realize what acting was like and fully embraced it.

He debuted at the age of five playing the role in the 1998 sitcom Soonpoong Clinic, followed by historical dramas Empress Myeongseong and Jang Gil San.

[11] Lee followed with a supporting role in the hit romantic comedy Rooftop Prince, where he played one of the 3 member of Yoochun's character entourage.

[14] In 2013, Lee played supporting roles in the historical drama The Blade and Petal,[15] and political romantic comedy Prime Minister & I.

[25] In 2019, he was cast in Search: WWW as Godori and in another drama named Extraordinary You which was a remake of the webtoon "July Found by Chance", Lee played the supporting role of "Jinmichae", a worker in a high school who guides the self aware students from the comical life.

Lee was later cast in a high school drama True Beauty (South Korean TV series) as a cameo.