Abstract: The evaluating function is constructed by applying the method of ideal-point, and the optimism solution of evaluating function is solved as the optimism solution of planning project. For example, the land use planning project evaluation of Shanxi Province was studied. The methods of theory-model and example analysis were employed. The result shows that the tiny differences of planning project were reported in the ideal-point method, and the evaluating result is proper, effective and credible. It is confirmed that it is one of the better methods for land use planning project evaluation.