The invention relates to an area protection method for a power distribution network with an inverter type distributed power supply connection. The method solves the problems that in the power distribution network with the inverter type distributed power source connection, faults are difficult to detect reliably through staged protection, and meanwhile, the fault removal time is long. According tothe method, in-situ protection is composed of directional current protection of low-voltage lockout, and enough sensitivity is achieved for setting when the tail end of a circuit where current settingvalue protection is located is in fault; and under the fault condition, area protection collects starting information and fault direction information of in-situ conservation within the area range, and an area protection logic criterion is sequentially executed. The area protection method has the advantages that the in-situ protection action time can be adjusted in a self-adaptive mode, and the coordination and cooperation among protection can be strengthened while fault removal is accelerated; and the redundant switching value information within the area range is utilized, so that the selectivity, the sensitivity and the power swing of the protection method are improved, and meanwhile, the fault-tolerant capability of the protection method is enhanced.