Without scientific evaluation, there is no scientific management. However, up to today, accurate evaluation still is a difficult thing. In the field of public management, the fragmentation and sectionalism of officialdom based on business approach are being modified by the new conception of "Joint-up Government", "Horizontal Government", and "Whole-of-Government", which increasingly emphasize the cooperation and balance between the policy objectives. In this instance, the government performance evaluation should also towards to strategic synergy. The article put forward "the model of overall performance evaluation" that integrated the government organizational performance and the strategic planning performance. The empirical study selected Beijing main function region as an example to compared the results between the single organizational performance and the performance integrated the implementation of main function region planning, and we found there was significantly different between the results, based on which we design the overall performance management matrix that combined the main function area performance and the organizational performance. The matrix is a two-dimensional coordinate made by the score value of the main function area performance and the government organizational performance. Different combination of two dimension divided the matrix into six level performance area, from high to low were: the optimal zone, advantage zone I, advantage zone II, the intermediate zone I, the intermediate zone II and the danger zone, which achieved the purpose assessing local government overall performance. Finally, we discussed the application of the evaluation results from the two aspects that mining the failure and policy making evidence
