Decision-making for approving a project of land consolidation plays an important role in scientific investment decision-making and choosing consolidation project properly.According to the actuality of land consolidation industry in China,such factors were deeply researched as society, economy, technology,ecology,organization of management and so on,which had tightly relations to decision-making for approving a project in land consolidation.And the framework of evaluation index system was initially formed for project decision-making in land consolidation. Then using the matter-element theory and superiority evaluation method,the paper designs the matter-element of comprehensive evaluation for decision-making in land consolidation,and puts forward the extension evaluation method based on correlation function.Finally taking some projects from in preparative projects database of the Consolidation & Rehabilitation Center in Ministry of Land and Resources as examples,verification was carried out.The output of the model completely accords with the results made by specialists of the project evaluation.The conclusion can provide scientific basis of decision-making for approving a project in land consolidation.