Park's fame came when she played the younger version of the character Han Jung-suh in the popular Korean drama, Stairway to Heaven. She also starred in a drama series called Tree of Heaven which aired on SBS, starring her former co-star in Stairway to Heaven, Lee Wan. The show had decent ratings, and the reviews and criticism were mixed, but mostly positive. Many critics keyed in on her portrayal of the character Hana's pain of loving her step brother Yoon-suh Lee Wan as brilliantly done. It should also be noted that due to the age difference between her and Wan, romantic scenes such as kissing on the lips could not occur, as seen in the scenes in the show, where had it been an older actress, such scenes may have occurred. Tree of Heaven started with borderline mediocre ratings, as do many new Korean dramas do, but went on to finish very respectably, and gained a fan base in Korea, which further helped Park's credibility and young career in acting. Since then, Park has done many commercials (CF) and modeled for a number of Asian companies.
Through her roles and their requirements, Park has displayed an instinctive talent for dancing and martial arts. She has also released a digital single, "Prayer", a song she used to sing in the drama Tree of Heaven, however, the track was not released in the Official OST.