Display unit of cup and method thereof

PURPOSE: A display device of a cup and a manufacturing method thereof are provided, which can be applied to a premium event including lotto and the like by using color change property according to temperature. CONSTITUTION: A manufacturing method of a display device of a cup comprises: a process of preparing a base portion(200) in a fixed position of a cup(100) using paint or a color sticker; a process of making a first display unit displayed by a first temperature condition; and a process of making a second display unit displayed by a second temperature condition. A display device of a cup includes a base portion prepared in the outer circumference of the cup, a first display unit, and a second display unit.