Reviewing the history of software development, software development ideas and methods have always been in evolution, growing out of nothing and attracting ever-increasing attention. All sorts of evolution of software development ideas and methods can be summarized as from simplicity to complexity, from extensiveness to intensiveness, from the non-reuse to the reuse, from normalization to flexibility, from pursuing universality to emphasizing specificity, from tightly coupling to loosely coupling. The research is conducted on the future evolution of software development ideas and methods. In their evolution process, they will continue to take on the diversification trend with improving efficiency and assuring quality as the key points, combining normalization with flexibility, pursuing universality as well as specificity. Evolution of software development ideas and methods will continue. The above results offer a good basis for designing new software development ideas and methods.
