Objective:To analyze the service efficiencies of private hospitals in a Chinese city using Data Envelopment Analysis (DEA) method,and to discuss the problems existing in the management strategy of the hospitals.Methods: The management data of all the private hospitals were obtained by questionnaire survey and the parameters and samples were selected.DEA method was used to assess the service efficiencies of 58 private hospitals.Results: There were obvious differences on different aspects during their development between different hospitals.The total validities,the technical validities,and scale validities were obviously different.Twelve hospitals achieved total validity,23 achieved technical validity,and 14 achieved scale validity.Conclusion: Most of the private hospitals in the city have defects in scale and technical validities.In order to achieve total validity in service efficiency,the private hospitals have to pay more attention to balanced development of technique and scale,while considering their own situation.