The reliability comprehensive analysis for a foreign certain type machining center was made,the fault data of each subsystem was collected,and the fault data were analyzed by using MATLAB software,the fault frequency distribution function of each subsystem was determined,and the point estimated values of mean time between failure,mean time to first failure and equivalent failure rate were calculated.The method of combining subjective and objective weight assignment based on entropy weight theory and expert experience was used to determine the comprehensive weight of the index,the membership function combined with triangle and half trapezoid was used to describe the fuzziness of each index,the reliability level of each subsystem of the high-end machining center was comprehensively evaluated by using fuzzy mathematics theory.The reliability classification level of each subsystem was obtained by using the principle of maximum membership degree selection,and the reliability level of the high-end machining center was determined as high.