The embodiments of disclosure disclose a method and device for transmitting and receiving wireless power. The method includes: switching a state of a resonance element used for transmitting and receiving electromagnetic waves to an electromagnetic wave transmission state; boosting a first direct current output by a mobile device to a second direct current having a predetermined voltage; inverting the second direct current to an alternating current; converting the alternating current into an electromagnetic wave and transmitting the electromagnetic wave, wherein the electromagnetic wave is used for charging a to-be-charged device. The embodiments of the disclosure provide a solution for wirelessly charging peripherals through a terminal and thus solves a problem that there is no solution provided to wirelessly charge peripherals through the terminal in the related art.