The invention relates to a zero blind area anti-islanding protection system of low-voltage distributed power supply, include that box, inverse power protector, a protection module and an output controller, one end of the inverse power protector is connected with a first current transformer, the other end of the inverse power protector is connected with an output controller, one end of the protection module is connected with a second current transformer, the other end of the protection module is connected with an output controller, and the output controller is connected with a grid-connected switch of a low-voltage distributed power source; Advantages of the invention: detecting the current on the low-voltage side of the transformer by a first current transformer connected to the reverse power protector, As current reversal is detect, Through the output controller, the low-voltage distributed power supply can be forced to switch on and off immediately, thus ensuring that no arc island is formed in 100% of the low-voltage distributed power supply, ensuring that the distributed power supply will not return high-voltage power to the 10KV line through the transformer, ensuring the safety of the repair or maintenance personnel, and avoiding the occurrence of mass casualties.