Type of not only waterfalling, but also agile development process, are bound to curse fix the requirements specification, then, that to do the implementation. In principle, these are so-called V-shaped in accordance with the process of development. Software is executable knowledge be placed in the real world, and also must be considered to be the target of the design artifact. Use of software is a process of action and reaction by its execution. Through this,  recognition and requirements are changing. In this paper, we propose a process of software construction and evolution process model called  Lambda-V-shaped model considering the user feedback process.