The present invention provides an electronic capacitance voltage division mutual inductor temperature compensation method and device. The method comprises the following steps: respectively detecting the temperatures of a high-voltage arm capacitor and a low-voltage arm capacitor of the electronic capacitance voltage division mutual inductor; calculating the real-time voltage division ratio K' of the electronic capacitance voltage division mutual inductor at the current temperature; performing compensation of the voltage division signals U' collected by the electronic capacitance voltage division mutual inductor according to the obtained real-time voltage division ratio K' and the standard voltage division ratio K of the electronic capacitance voltage division mutual inductor, and obtaining voltage division signals U after temperature compensation; and performing conversion and output of the voltage division signals U after temperature compensation. According to the technical scheme of the invention, the electronic capacitance voltage division mutual inductor temperature compensation method and device consider the influence caused by the inconsistent changing of the temperatures of the high-voltage arm capacitor and the low-voltage arm capacitor when the real-time voltage division ratio is calculated to solve the problem that the output of the electronic capacitance voltage division mutual inductor is not accurate caused by the temperature difference of the high-voltage arm capacitor and the low-voltage arm capacitor.