The invention relates to an electromagnetic coupling electricity-taking device and an application thereof. According to the electromagnetic coupling electricity-taking device, a high-frequency current wire passes through the center of an annular core body wound with a coil, and two ends of the coil are led out so as to be adopted as two electrodes of a coupling power source, and therefore, electric potential difference can be formed, and a power source can be generated. The electromagnetic coupling electricity-taking device can be applied to electric appliances such as an induction cooker and a radiant-cooker as an auxiliary power source.