UI design was mainly focused on the visual user interface designed with the main elements as interface style setting and emotional expression, while interactive design was more inclined to solve user’s problems through software in the most effective way, which had to be hosted by UI interface. There existed distinctions and close connections between them. UI interface design mainly included unlocked user-friendly interaction design, icon emotional interaction design, 3D dynamic interface interaction design, user-friendly operating logic of interaction design, user-friendly interaction design with smart applications of software and hardware and so on. Its design should follow the“people-oriented” principle as the starting point and objective, with the concepts of unique combination of the user adoption enjoyment and pleasure, and adaptability design in multiple hardware and software environments.