Choi Ji Woo graduated from Pusan Sooyoung Elementary, Sooyoung Girl's Jr. High, and Dukmoon Girl's High School, and majored in aerobics at Pusan Woman's Professional College's Dance Department. She was first discovered when she won a talent audition organized by MBC in 1994, and made her debut in the 1995 drama series War and Love, after which she adopted the stage name Choi Ji Woo. She also appeared in the popular drama First Love, where she was the first paired with actor Bae Yong Joon. In 2001, Choi gained popularity with her role as an orphaned girl suffering from leukemia in the series Beautiful Days, in which she starred alongside Lee Byung-Hun. That same year, she enrolled in Hanyang University's Department of Theater/Film Studies. Although Choi completed her first year, she had to withdraw from college studies due to her hectic work schedule. Choi's most recent work is the MBC weekend drama "Air City", her first series in three years. In the series, she plays Han Do-Kyung, Chief Operating Officer of Incheon Airport, a role that requires her to be multi-lingual. Her co-stars include Lee Jung-jae and Lee Jin-wook, and the trio completed their photo shoot for the series poster in February 2007. The 20-episode drama made its debut on MBC on May 12 and will conclude on July 15.