Born Lee Hyuk-soo, he debuted as a model in designer Jung Wook-jun's Lone Costume fashion show in 2006. He walked down the runways of the nation's famous fashion brands including General Idea and Song Zio, and did cover shoots for several renowned fashion magazines such as GQ, Bazaar and Elle. After appearing in music videos of girl groups Gavy NJ and 2NE1 in 2009 and 2010, he expanded his career into acting, using the stage name Lee Soo-hyuk. Lee was mentioned in the online fashion magazine Style Minutes as one of the "13 Top Breakout New Male Faces" during the 2013 Fall/Winter London and Paris fashion weeks. In 2014, Lee signed with Star J Entertainment, leaving his former agency SidusHQ. He then starred as the second male lead in the cable romantic comedy series High School King of Savvy and Valid Love (both from tvN). In 2015, Lee was cast in the period vampire romance Scholar Who Walks the Night, based on the webtoon of the same title.

Lee Soo-Hyuk é um ator e modelo sul-coreano da YG Entertainment. Ele estreou como modelo no desfile de moda Lone Costume do designer Jung Wook Jun em 2006. Soo Hyuk desfilou nas passarelas de marcas de moda famosas do país, incluindo 'General Idea' e 'Song Zio'. Fez capas para diversas revistas de moda renomadas como GQ, Bazaar e Elle. Depois de aparecer em videoclipes dos grupos femininos Gavy NJ e 2NE1 em 2009 e 2010, ele expandiu sua carreira para atuar. Soo Hyuk fez sua estreia como ator com um papel menor no filme de 2006 'My Boss, My Teacher'. Sua carreira disparou em 2010 graças ao seu papel principal no filme romântico de 2010 'O Garoto de Ipanema', que ganhou diversos prêmios.

Lee Soo Hyuk se alistou no exército em 10 de agosto de 2017 e recebeu alta em 9 de agosto de 2019.