The invention discloses a method for implementing adaptive zero sequence current network protection. The method is characterized by comprising two main steps of grounding transformer zero sequence protection and feeder zero sequence protection. An action fixed value is adaptively adjusted according to the characteristic of a multi-loop grounding failure, so that the reliability of the feeder zero sequence current protection action is guaranteed to the maximum extent, and mis-operation of zero sequence current protection for a grounding transformer serving as a standby is avoided; and therefore, effective protection can be provided for various grounding failures of a power system.