The utility model discloses an oil transmission pipeline electric heating blocking-removing device used in petroleum industry, which is connected between a well opening oil outlet pipeline and an input pipeline of a metering station, can carry out electric heating and blocking-removing for an oil transmission pipeline, and ensures the normal production of an oil well. The device comprises two cables, two cable connectors and a control box, wherein one end of each cable is respectively connected with the output end of the control box, the other ends of the cables are respectively connected at the two ends of the oil transmission pipeline through the two cable connectors, the input end of the control box is respectively connected with the output end of a transformer, and under the action of currents output through the transformer, the oil transmission pipeline produces surface action to produce heat, so that the oil transmission pipeline becomes hot. The oil transmission pipeline electric heating blocking-removing device can prevent the oil well with low yield, thickened oil and wax precipitation to block the oil transmission pipeline, so that the oil well can normally produce for a long time, and the production stop of the oil well can be reduced. Particularly, the problem that the pipeline is frozen to be blocked in winter is solved, and the protection can be provided to the normal production of the oil well in winter.