Portraits are important material for studying costumes and the history and customs of the time. Portraits of women are rare in Korean portraits. Chae Yong-Shin is a painter from the late Joseon Dynasty during the Japanese colonial period and painted many portraits. This study aims to evaluate the status of Chae Youg-Shin's portraits of women and understand the costumes in portraits held by the Cultural Heritage Administration or Museum. Chae Young-Shin painted until his death at a young age, and he left portraits of 60 to 150 pieces. Only less than 10% of his portraits of women have been painted. Unnangja-sang, the Portrait of Unnangja, became the title of his post-production exhibition because it is the representative work of Chae Yong-Shin. The colors of the jeogori and chima were mixed because the Unnangja-sang statue was painted on paper more than 110 years ago. The meaning of Unnangja was interpreted differently by scholars in different areas. The characteristics of the painting by Chae Yong-sin include the shape of a hwamunseok, chair border, hand shape, ornamental silver knife norigae, handkerchief, double ring, and the shape of the skirt trim. Couple’s Portraits are a work commissioned and produced as a work that maximizes the realistic expression of the recruiting scene. Portraits of many wives were painted when the model was 61 years old. The portrait of an old lady in the collection of the Seoul National University Museum is a painting commemorating the sixtieth birthday in a formal dress. The portrait of the old lady in Leeum, the Samsung Museum of Art, wears a ordinary dress, and the tense figure shows the posture taken by the model. Costumes in Chae Yong-Shin's portraits of women can be divided into an ordinary dress and a formal dress. In most portraits of women, including Unnangja-sang, the models had a bun on hanbok's ordinary dress. However, only one old lady's Portrait, held by the Seoul National University Museum, wore formal dress, ceremonial robe, and a flower crown. Most of the costumes show wearing white hanbok. The previous research mistakenly wrote a wonsam with a decorated with jokduri. The works of Chae Yong-Shin, including the Unnangja-sang, are preserved, and the works are worth preserving.