With the development of the POP advertising, the cardboard showcase has become the important part of the packaging design field. Three programs such as stairs showcase, step showcase and circle showcase are raised in project from the aspects of adapting the market and the consumption demand. Based on the analysis comparison on material, structure and ergonomics, the design factor of showcase was verified. The characteristics of the shape and structure of the cardboard showcase are discussed and the valuable suggestions for their design of the development prospects are proposed.