The core competence of the designer is the ability of storytelling, which suddenly dawned on me. The essence of design is an expression, which is a way of expression just like movies and books. The key lies in how to achieve effective expression. In this regard, storytelling embodies its advantages, because it is a comprehensive ability, just as important as design thinking. Storytelling is actually another way of expression dominated by emotional thinking. It can be seen from a simple survey that many professions emphasize a kind of story thinking. Because storytelling is an effective way to communicate, express ideas, and persuade others. In fact, the reason why designers emphasize storytelling is not only that story thinking can better express your design philosophy, but also that it can help designers explore and understand the target users and their situation in the whole design process, stimulate creativity, create design prototypes and evaluate the design.