The purpose of this study is to investigate decoration techniques applied to the Korean traditional costume of modern style which are shown in special monthly magazines relevant to the traditional magazine. Findings of the study can be summarized as follows. The types of decoration techniques applied to the Korean traditional costume are largely classified into single and composite types. In the traditional costume of the former type, a quite many of gold and silver foils and embroideries are found. While, in that of the latter type, a combination of two different decorations, embroideries and seonchigi or multi-colored stripes and seonchigi is often used. These decoration techniques are usually applied to some parts of the costume like git, kkeutdong or cuffs, somae or sleeves, seop, goreum or coat strings, jacket or jeogori, the lower hem of the skirt and between joined parts in the skirt. Used together with the techniques, patterns are usually applied onto embroideries and gold or silver foils. Most of the patterns are flower in shape. The main material of the Korean traditional costume is fabrics that have no pattern on the surface and are commercially available irrespective of season. Git used for jeogori is largely classified into dangko git and donggrae git in type. Its color is in most cases same as the main color of jeogori. Keutdong for jeogori is usually 4 to 5.5 cm in breadth, classified as type II. Its color is in most cases white. Goreum for jeogori is usually large in length. Its color is most cases same as that of jegori or reddish purple or blackish red purple.