Kim made her acting debut in 1988 when she was six years old, in the MBC Best Theater episode Widow. She then starred in numerous television dramas as one of the most in-demand and praised child actresses of her generation. As Kim grew up, she would become one of the few Korean child actors who successfully transitioned into adult roles. Her more notable TV series include Ireland, Fashion 70’s, New Heart, Strike Love, and The Thorn Birds.