Human development to today, people's daily life has been completely inseparable from the computer help. And when people open the computer each day to see most of Microsoft's design of windows interface. As the industry's leading operating system, windows system, although not known as the most popular operating system, but it is definitely the most mainstream, the most popular. In particular, with the windows vista, windows 7, and other new version of the listing again for the operating system market, an injection of fresh blood. Windows systems development to today, to accompany us through 25 years, after wind and rain, while there are also mixed it, but we must recognize that the popularity of its computers, played a significant role. Over the years Microsoft has been constant innovation to improve their work, in these improvements in a matter of course also includes a windows interface design. From the seventies and eighties, the DOS system, black white text, to 1985, the first generation of color windows interface, to present windows7, 0 interface design, world design has also undergone enormous changes. The thrust of this paper is to study the past 25 years, windows interface design, design history and world relevance, and necessity.