The invention discloses a CPR1000 type nuclear power station equipment grading identification method. The method comprises the following steps of S1, determining an equipment list to be graded and identified of a system; S2, listing the failure states of the devices needing to be graded; S3, analyzing an equipment failure result corresponding to the failure state in the step S2; S4, comparing theequipment failure consequence obtained in the step S3 with 22 established different critical degree criteria, and determining the critical degree level of the equipment; S5, comparing the equipment operation frequency with six established operation frequency criteria, and determining the equipment operation frequency level; S6, comparing the working environment of the equipment with the established eight working environment criteria, and determining the working environment level of the equipment; S7, comparing the equipment failure state obtained in the step S2 with the established explicit and implicit criteria, and determining the explicit and implicit characteristics of the equipment failure; and S8, enabling an expert review conference to carry out reasonability judgment on the data obtained in the steps S2-S7. According to the method, the problem of how to judge the criticality level is solved, and a foundation is laid for the subsequent nuclear power plant equipment hierarchicalmanagement.