With the application of distributed and renewable power source technologies, as well as the simultaneous development of informational communication and power electronics technology, the traditional one-way-supplied power distribution network is facing a huge challenge leading the way to bilateral compensative power distribution network. Active distribution network（ADN） is an important means to solve the above problems. In this case, the selectivity and correctness of traditional feeder automation cannot be ensured. It is necessary to provide more effective evaluation methods. Under the circumstances that a large amount distributed energy resources integrated into distribution grid, the paper aims at the evaluation of the effectiveness of FA fault processing effect from two aspects of FA action process and action result on the basis of characteristics of active distribution network. An evaluation index system and the evaluation method of the feeder automation for active distribution network were presented, which can provide theoretical basis for the future development of feeder automation for active distribution network.