The utility model discloses a screw pump rotation flasher. The screw pump rotation flasher comprises a permanent magnet, an induction coil, an electrical brush, a first wire, a polished rod connection hoop and bicolourable light-emitting diodes, wherein the permanent magnet is installed on the output shaft of an oil pumping motor; the induction coil is electrically connected with a movable seal at the lower end of the polished rod via the first wire; the electrical brush is installed on the movable seal; the top end of the polished rod is sleeved with the polished rod connection hoop; a plurality of holes are formed in the periphery of the polished rod connection hoop; the bicolourable light-emitting diodes are installed in every hole; the electric brush is electrically connected with every bicolourable light-emitting diode via a second wire; when the oil pumping motor is in normal operation, power is generated by the induction coil and conducted to the bicolourable light-emitting diodes at the top end of the polished rod; the bicolourable light-emitting diodes emit blue and red flash, whether screw pump well is in normal operation or not can be remotely viewed at night, as a result, problems can be timely discovered, and further the normal production of oil well is ensured.