She was born in 1953 in Seoul; received her bachelor’s and master’s degrees at Seokang University Korean Literature Department and her doctorate degree on French Literature in 1983 in Provans University in France. After publication of her long story on Gwangju Democracy Movement in the summer issue of the seasonal Literature and Society magazine in 1988, she took her first step in novel writing. In 1992 she received Dongin Literature Award for her story The Gray Snowman and in 1994 she received YiSang Literature Award for her story The Last of Hanak'o. She is considered as a writer with an influence on the Korean literature for her meticulous, thoughtful and aesthetic style.
The writer has numerous story compilations and novels and her works have been translated into English, French, German, Japanese and Chinese and Ch’oe Yun is currently works as a professor at Seokang University French Culture Department. The writer has contributed to the compilation Kore Öyküleri (Korean Stories) published in Turkish by İletişim Publications.