The main challenges for high-tech enterprise based on project development to implement lean mode are analyed, and it is indicated that high-tech enterprise should convert from the lean production to the lean value management. After compared various value definitions, the concept of Life Cycle Lean Value (LCLV) for a project is proposed and its characteristics, elements, and all kinds of evaluating tools and methods are studied. Finally, the main approach of lean value management for enterprises is discussed.