There are differences in the management level of large scientific instruments among the equipment owners. It is unreasonable to use fixed weight evaluation indicator to consider the share service performance. Based on the analysis of performance evaluation indicators of Yunnan large-scale scientific research instrument open sharing management platform, the indicators are correlated and coupled according to the built-in attributes of the instrument management unit, resulting in the evaluation dimension that takes the average original value of the instrument as the baseline, and the operation share yield of external service and the number of external service units as the consideration. Based on the characteristics of shared service record data, the SSP evaluation model of different built-in attribute instrument management units was established by using evaluation dimension. Through the verification of real data, the error rate between the results considered by SSP evaluation model and the real results is 26.67%, so the shared performance evaluation model based on data characteristics has certain accuracy. The calculation results of model can objectively reflect the sharing service ability and level of instrument management units, and provide evaluation basis and reference for government management departments to implement rewarding subsidies fairly and notariously.