The utility model discloses a novel intelligent?power distribution protection device, leave the return circuit including computer protection CPU, division income return circuit and the shutting of bypassing the immediate leadership, computer protection CPU connects out to go into the return circuit respectively and leaves the return circuit with the shutting of bypassing the immediate leadership. The utility model designs a with the locking circuit that the hardwire is given first place to, the device has all the way to be opened the return circuit and is used for inserting subordinate's tripping operation signal, and the relay operation that the return circuit was left in bypassing the immediate leadership when the subordinate takes place short -circuit fault shutting sends a signal and opens the return circuit to higher level's protection, opens the return circuit through computer protection CPU shutting tripping operation action, has that the real -time is strong, transmission?distance is far away, an anti -electromagnetic interference ability reinforce, advantage such as with low costs.