Software engineering implementation is to apply software engineering theory for software development organizations in order to improve the product development time (T), quality (Q), cost (C), service (S) of software development organization. The most important is the engineering software development process, namely the establishment of a process with working order, limited step, and in line with the rules throughout the software development organization, to improve software quality and shorten the software development cycle. Although software engineering research has been conducted for decades, the level of engineering software development organization in China now is still relatively low, which has become a major problem restricting the development of China's software industry, but also an important factor affecting the internationalization of China's software industry. In this context, this paper combines several years of experience and engineering exploration experience in project development to study the software engineering implementation problem, principles, procedures and methods.