We believe that Princess Bari has a structure which may be understood using the esthetic category Sublime. As Kant said, Sublime as an esthetic category is different from Beauty. Beauty is only composed of pleasure, while Sublime is composed of pleasure and displeasure. Beauty is a static category, while Sublime is a dynamic category. We feel a sense of Sublime in the process of switching over from displeasure to pleasure. So we must pay attention to the motifs involved in this displeasure. A sense of displeasure is expressed intensively the process of the union between Bari and Mujangseung. Mujangseung is very dreadful and frightful. His height seems to reach the sky, and his feet are three feet and three inches long. He is a typical Sublime object, being absolute, overwhelming, and transcendental. In order to switch over from displeasure to pleasure, Princess Bari uses special strategies. For example, Bari`s height is increased or she is made to suffer hardship for a very long time. This fact is worthy of notice because Sublime can help us understand the peculiar properties of oral literature. We must be careful of our habitual tenancy to concentrate only on Beauty as an esthetic category. Beauty is a category which became particularly emphasized in the modern period. Therefore, it has limitations in understanding esthetic diversity. On the other hand, Sublime may be very useful in establishing the distinctive identity of oral literature. This is because there are many motifs in oral literature that are related to displeasure or Sublime.