High density distributed power supply complicates the fault current of distribution network, and makes fault location difficult. In this paper, a fault location scheme based on distributed intelligent feeder automation is proposed to locate and isolate feeder automation fault. The regional fault identification methods for distribution networks with DG is analyzed, the regional current algebra and variation are introduced as the basic criteria for fault location, and the protection criteria based on the sudden change of current phase are proposed. Finally, the proposed scheme is verified by a 19-node network simulation model, which shows that this scheme can realize fault location and isolation quickly and has good adaptability to the access of high-density distributed power supply. This work is supported by National Natural Science Foundation of China (No. 51777121).