He is best known for his starring roles in the television series Kill Me, Heal Me (2015), She Was Pretty (2015), Hwarang: The Poet Warrior Youth (2016–2017), Fight for My Way (2017), What's Wrong with Secretary Kim (2018), Itaewon Class (2020), and Gyeongseong Creature (2023–2024).

He gained a lot of experience from being the center of attention, which led him to pursue his studies in the Acting Department at Seoul Institute of the Arts.

[5][6] Park made his entertainment debut in 2011 by appearing in the music video of Bang Yong-guk's single "I Remember.

[27][28] The series was a hit and Park received positive reviews from critics for his performance, being dubbed the "master of romantic comedy" by the Korean press.

For his role, Park was nominated for Best Actor - Television at 56th Baeksang Arts Awards[38] In 2023, he starred in the sports film Dream as a soccer player turned coach named Yoon Hong-Dae, directed by Lee Byeong-heon,[39] and disaster-thriller film Concrete Utopia directed by Um Tae-hwa.

[41][42] On February 10, 2023, Park donated ₩100 million to the Hope Bridge National Disaster Relief Association to help victims of the 2023 Turkey–Syria earthquake.