A power matching method for wireless charging, applied to a wireless transmitter in a wireless charging system, wherein a transmitting coil of the wireless transmitter comprises a capacitor assembly (Cp) and an inductor assembly (Lp), and at least one of capacitance of the capacitor assembly (Cp) and inductance of the inductor assembly (Lp) is adjustable, and the method comprises: receiving (S102, S202, S302) first sensing information sensed from the transmitting coil; detecting whether resonant frequency has changed according to the first sensing information; and adjusting at least one of capacitance of the capacitor assembly (Cp) in the transmitting coil of the wireless transmitter and inductance of the inductor assembly (Lp) in the transmitting coil in response to the resonant frequency changing to make transmitting power of the wireless transmitter be matched with receiving power of a wireless receiver in the wireless charging system; wherein the first sensing information comprises at least one of a first sensing voltage value and a first sensing current value; characterized in that in the adjusting at least one of capacitance of the capacitor assembly (Cp) in the transmitting coil of the wireless transmitter and inductance of the inductor assembly (Lp) in the transmitting coil in response to the resonant frequency changing to make transmitting power of the wireless transmitter be matched with receiving power of a wireless receiver in the wireless charging system, the method comprises: determining whether transmitting power is matched with receiving power by charging efficiency of the wireless charging system; wherein the charging efficiency is a ratio of the receiving power to the transmitting power; determining that the transmitting power obtained after adjusting the at least one of the capacitance of the capacitor assembly and the inductance of the inductor assembly is matched with the receiving power in response to current charging efficiency reaches a preset efficiency threshold or reaches a preset efficiency range. receiving (S102, S202, S302) first sensing information sensed from the transmitting coil; detecting whether resonant frequency has changed according to the first sensing information; and adjusting at least one of capacitance of the capacitor assembly (Cp) in the transmitting coil of the wireless transmitter and inductance of the inductor assembly (Lp) in the transmitting coil in response to the resonant frequency changing to make transmitting power of the wireless transmitter be matched with receiving power of a wireless receiver in the wireless charging system; wherein the first sensing information comprises at least one of a first sensing voltage value and a first sensing current value; characterized in that in the adjusting at least one of capacitance of the capacitor assembly (Cp) in the transmitting coil of the wireless transmitter and inductance of the inductor assembly (Lp) in the transmitting coil in response to the resonant frequency changing to make transmitting power of the wireless transmitter be matched with receiving power of a wireless receiver in the wireless charging system, the method comprises: determining whether transmitting power is matched with receiving power by charging efficiency of the wireless charging system; wherein the charging efficiency is a ratio of the receiving power to the transmitting power; determining that the transmitting power obtained after adjusting the at least one of the capacitance of the capacitor assembly and the inductance of the inductor assembly is matched with the receiving power in response to current charging efficiency reaches a preset efficiency threshold or reaches a preset efficiency range. determining whether transmitting power is matched with receiving power by charging efficiency of the wireless charging system; wherein the charging efficiency is a ratio of the receiving power to the transmitting power; determining that the transmitting power obtained after adjusting the at least one of the capacitance of the capacitor assembly and the inductance of the inductor assembly is matched with the receiving power in response to current charging efficiency reaches a preset efficiency threshold or reaches a preset efficiency range.