has starred in various television dramas and movies such as Pure Love (2016), My Annoying Brother (2016), Be Positive (2016), Room No.7 (2017), 100 Days My Prince (2018), Along with the Gods: The Two Worlds, Swing Kids (2018), Bad Prosecutor (2022), and The Moon (2023).

[7] He performed Na Yoon-kwon's "Anticipation" and Brown Eyed Soul's "My Story" at his audition.

was formally introduced as the eighth member of Exo on January 30, 2012, with the release of the Korean version of the single "What Is Love", sung by D.O.

made his small screen debut playing a supporting role in the SBS drama It's Okay, That's Love, which starred Gong Hyo-jin and Jo In-sung.

[18] In February 2016, he collaborated with Yoo Young-jin on a duet titled "Tell Me (What Is Love)" for SM Station Season 1.

starred as the male lead alongside actress Kim So-hyun in the romantic film Pure Love.

starred alongside Jo Jung-suk and Park Shin-hye in the film My Annoying Brother, playing a national level Judo athlete.

and Jo Jung-suk also recorded the ending theme song, titled "Don't Worry," for the movie.

[28] The same year, he played a supporting role in Kim Yong-hwa's film Along With the Gods: The Two Worlds, a blockbuster adaptation of the webtoon of the same name, about a court in the afterlife where the deceased undergo multiple trials for 49 days.

attended the Macau International Film Festival alongside director Choi Dong-hoon as a Korean public relations ambassador.

starred in Swing Kids, a film set in a prison camp in South Korea during the Korean War.

He plays a North Korean soldier who falls in love with tap dancing in the midst of all the chaos.

[36] Shortly after the news, he posted a handwritten letter on EXO's official fan club confirming and announcing his upcoming enlistment for South Korea's mandatory military service.

On the same day, he released the single "That's Okay," a song that he co-wrote, through the SM Station project as a gift for his fans.

participated in the Taegeukgi (Korean Flag) Campaign for the 70th anniversary of Korean War[43] and was cast in a commemorative rerun of the original military musical Return: The Promise of the Day, playing the role of young Seungho, marking it as his musical theater debut.

[46] During his service, Doh Kyung-soo also participated in Military Manpower Administration's "I Am Proud" campaign.

[47][48] He was also selected in the South Korea's Ministry of Justice awareness campaign against "Digital Sexual Exploitation".

[49][50] After taking his final military vacation leave in December 2020 without returning to his base in compliance with the army's protocols regarding the COVID-19 pandemic,[51] D.O.

[52] In October 2020, prior his discharge, he was announced to be cast in Kim Yong-hwa's next film, The Moon, where he will play the lead role of Hwang Seon-woo, an astronaut left in space due to an unforeseen accident.

[56] In February 2021, he was announced to have been cast as the male lead in Secret, a South Korean remake of the 2007 Taiwanese film of the same name.

would be leaving SM Entertainment and joining a new agency, Company SooSoo, established by his long-time manager Nam Kyung-soo for his personal activities.