Abstract:A large scale project, Guang Le expressway, which is the largest investment project in our country, has been selected as the research case, and the collaborative evaluation index system of large scale project resources has been studied. The classical grounded paradigm is used for substantive coding and theoretical coding of data. Under the premise of theoretical saturation, 69 labels, 30 concepts, 12 categories and 3 main categories are extracted. On this basis, a three-dimensional conceptual model of collaborative evaluation of large scale engineering resources is constructed, and an index system for collaborative evaluation of large scale engineering resources is established. The questionnaire and expert scoring method are used to analyze the reliability of collaborative evaluation indicators of large-scale engineering resources, and the weight of the index is calculated by the method of correlation matrix weighting.