| In the interactive user centered design so prevalent today, how to accurately grasp of user needs becomes the key factor of product innovation. Interaction design products to provide a good service and create a good experience for the target.All the designs are closely related with the expectations of the users and potential demand. For designers, the ability to design is not only reflected in the interactive product output, while mining user demand level has become an important index. Researching of unconscious behavior of users Provides a new idea to use in the design of interactive interface.This article attempts from the cognitive science and psychology, study of unconscious behavior in the interaction design significance, researching from a new point of view of interaction design. User studies in the past have focused on user’ s explicit requirements, mining representation of external behavior, but most users demand are from the invisible demand. Research on interaction design interface, classification analysis combined with application of unconscious behavior in design, the application value of the unconscious behavior in the design of interactive interface:reduce the user’ s cognitive load, meet the invisible and potential demand of users and effectively convey implicit emotion.Finally the design theory is applied to the design practice, by observing the user’s unconscious behavior to find the user invisible demand, from the "natural" conform to the user view to design a user unconscious behavior can trigger interactive products, apply the unconscious behavior in interface design, to further explore the interaction design method in practice. |