Software engineering is taught us how to develop a conform to the requirements of software, when we write a big program is, want to have a clear steps and framework, we need to learn how to do the requirements analysis to understand the function of the need to implement process, how to do system design to build the framework of the program, how to test to verify the correct program features such as, software engineering can teach us how to develop a project from engineering point of view, finally realizes a structure clear, easy to maintain a good program, improve the efficiency of the project, software engineering will become a person should be how to better development project,