The utility model belongs to the technical field of the distribution lines earth fault point is looked for, concretely relates to an addressing machine for distribution lines earth fault point is looked for. The utility model relates to an addressing machine for distribution lines earth fault point is looked for, the addressing machine body includes the casing, be equipped with the high voltage output terminal on the casing, main earthing terminal and power input port, be equipped with high -pressure generating circuit in the casing, high pressure generating circuit includes transformer T1, high pressure rectification return circuit ZL, electric capacity C1, the resistance R1 and the switch SW1 that posts a letter, transformer T1's input and power input port electrical connection, transformer T1's output and high -pressure rectification return circuit ZL's input electrical connection, electric capacity C1 connects the output at high -pressure rectification return circuit ZL, high pressure rectification return circuit ZL's forward transportation output is series resistor R1 in proper order, post a letter behind the switch SW1 and high voltage output terminal electrical connection, high pressure rectification return circuit ZL's negative output end, switch SW1's the equal and main earthing terminal electrical connection of earthing terminal posts a letter.