UI is the abbreviation of User Interface.

UI design refers to the overall design of the human-computer interaction, operation logic, and beautiful interface of the software. A good UI design not only makes the software personalized and tasteful, but also makes the operation of the software comfortable, simple and free, fully reflecting the positioning and characteristics of the software. Software design can be divided into two parts: coding design and UI design. The original meaning of UI is user interface, which is the abbreviation of the English words User and Interface. Literally, it is composed of two parts, user and interface, but in fact it also includes the interactive relationship between user and interface. In the rapidly developing electronic products, interface design work has been valued little by little. The "artist" who does interface design is also called "UI designer" or "UI engineer". In fact, software interface design is an important selling point of the product, just like the industrial design of industrial products. An electronic product with a beautiful interface will bring people a comfortable visual enjoyment, close the distance between people and goods, and is an artistic design based on science. The standard for testing an interface is neither the opinion of a project development team leader nor the result of a vote by project members, but the feelings of the end user.