Objective:To construct a comprehensive performance evaluation model based on Shapley value weighting method to improve the clinical service level of large medical equipment in hospitals.Methods:The performance evaluation index system of large medical equipment was developed from the three indicators of cost control,social gain and development potential at the criterion level and 22 indicators at the indicator level.The evaluation model was constructed by Shapley value weighting,and the comprehensive performance level was divided into four evaluation levels:high quality,relatively high quality,medium quality and poor quality.Performance management strategies were developed for equipment operating technicians,equipment managers and medical engineers.Thirty-one large medical equipment in clinical use in the hospital were selected and divided into control group and observation group according to different evaluation and management methods.The control group adopted cost-benefit evaluation management,and the observation group adopted comprehensive performance evaluation management.The comprehensive performance scores,evaluation levels of performance indicators and recognition degree of management quality of the two groups were compared.Results:The comprehensive performance scores of diagnostic equipment,treatment equipment and scientific research equipment in the observation group were(0.85±0.04)points,(0.87±0.06)points and(0.84±0.05)points,respectively,which were higher than those in the control group,the difference was statistically significant(t=2.836,t=2.354,t=3.879;P<0.05).The proportion of high quality and relatively high quality in cost performance,social performance and development performance of large medical equipment in the observation group were 77.42%and 19.35%,58.06%and 35.48%,41.94%and 51.61%,respectively,the overall proportions were higher than those in the control group,the difference was statistically significant(x2=4.026,x2=4.292,x2=5.415;P<0.05).The recognition of equipment management quality by medical staff,medical engineers,scientific researcher and equipment managers of the observation group were(91.79±3.93)%,(90.09±4.46)%,(93.48±2.03)%and(90.65±4.43)%,which were higher than those of the control group,the difference was statistically significant(t=2.564,t=2.271,t=6.210,t=4.353;P<0.05).Conclusion:The comprehensive performance evaluation model of large medical equipment in hospitals based on Shapley value weighting can improve the comprehensive performance level of large medical equipment,increase the proportion of indicators of high quality and relatively higher quality evaluation grade,and improve the management quality and clinical service capabilities of large medical equipment.