Embodiments of the present invention disclose a method for acquiring a network Key Performance Indicator (KPI) including: acquiring, by a KPI calculator, a performance counter value in an Element Management System (EMS) through an external interface, calculating and saving KPI data according to the performance counter value. Embodiments of the present invention further disclose a KPI component. The KPI component includes a KPI calculator and an EMS, and an external interface is set between the KPI calculator and the EMS to enable the KPI calculator, which is not a part of the EMS or the NMS, to calculate the KPI data independent of the EMS or the NMS.
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