In order to establish an effective mechanism of project performance evaluation, we need to analyze many elements involved in the project systematically, then to construct a specific, feasible and measurable evaluation index system which coincides with the strategic objective of the project. Therefore, the paper intends to construct a project performance index system based on strategy by using Balanced Score Card method from the angle of dynamic, prospective and logical view, following the principle of SMILE. And then organically combine the independent single index for project objective and operation process with a whole harmony according to their internal relations by using AHP and introducing order method. Finally construct a simple and practical strategy-based project assessing method in order to achieve the goal of sustainable development of the project.