This paper mainly researches the problem that enterprises select equipment resource in manufacturing resources sharing system. There are many influencing factors and some are uncertain or unqualified in the selection, therefore this paper using AHP and grey correlation analysis to evaluate and select. Firstly, the selection index system of equipment resource according to AHP is established, and then selection model based on multi-hierarchical grey correlation analysis is constructed. Applying this model to help enterprise select equipment can avoid errors resulted from human objective cognition difference and equalitarianism. The select result is more scientific and reasonable, and more in line with the enterprise requirements.