Perhaps most well known for her portrayal of Min-seo in the 2009 South Korean film Bandhobi, Baek is also notable for her work in the MBC Network situation comedy High Kick: Revenge of the Short Legged and in the MBC drama series Empress Ki. In addition, she played the role of Ja-hye in the popular 2010 comedy movie Foxy Festival.
Early in her career, she was cast in small roles in the films Kitchen and Missing Person.
Between 2011 and 2014, she won three MBC Entertainment Awards.
A native of Seoul, South Korea, she studied film at Yong In University.
In 2014, she and fellow South Korean actor Lee Beom-soo became series regulars on MBC's Triangle.