A method for wireless charging comprising: acquiring, by a terminal to be charged, a voltage threshold supported by a power management chip in the terminal, acquiring a plurality of output voltages supported by a wireless charger and output current upper limit values, each of the output current upper limit values corresponding to a respective one of the output voltages; determining, by the terminal, a voltage conversion coefficient according to the plurality of output voltages and the voltage threshold, and sending a charging request to the wireless charger, wherein the charging request comprises a requested voltage and a requested current, wherein the requested voltage is a maximum output voltage among the output voltages which are no higher than a product of the voltage threshold and a reciprocal of the voltage conversion coefficient, and wherein the requested current is no higher than the output current upper limit value corresponding to the requested voltage and the current is no higher than a current threshold supported by a Low Dropout Regulator, LDO, in the terminal; and generating, by the terminal, a charging signal under excitation of a wireless signal output from the wireless charger; performing, by the terminal, direct current voltage regulation on the charging signal by means of the LDO; and performing, by the terminal according to the voltage conversion coefficient and a current conversion coefficient, voltage and current conversion on the charging signal by means of a processing module connected in series between the LDO and the power management chip, to obtain an input signal of the power management chip, wherein a voltage of the charging signal is the requested voltage, and the current conversion coefficient is a reciprocal of the voltage conversion coefficient, characterized in that the determining, by the terminal, the voltage conversion coefficient according to the plurality of output voltages and the voltage threshold comprises: detecting, by the terminal, whether a maximum output voltage among the plurality of output voltages is higher than the voltage threshold; when it is detected that the maximum output voltage among the plurality of output voltages is higher than the voltage threshold, determining that the voltage conversion coefficient is a preset value smaller than 1, otherwise determining that the voltage conversion coefficient is 1. acquiring, by a terminal to be charged, a voltage threshold supported by a power management chip in the terminal, acquiring a plurality of output voltages supported by a wireless charger and output current upper limit values, each of the output current upper limit values corresponding to a respective one of the output voltages; determining, by the terminal, a voltage conversion coefficient according to the plurality of output voltages and the voltage threshold, and sending a charging request to the wireless charger, wherein the charging request comprises a requested voltage and a requested current, wherein the requested voltage is a maximum output voltage among the output voltages which are no higher than a product of the voltage threshold and a reciprocal of the voltage conversion coefficient, and wherein the requested current is no higher than the output current upper limit value corresponding to the requested voltage and the current is no higher than a current threshold supported by a Low Dropout Regulator, LDO, in the terminal; and generating, by the terminal, a charging signal under excitation of a wireless signal output from the wireless charger; performing, by the terminal, direct current voltage regulation on the charging signal by means of the LDO; and performing, by the terminal according to the voltage conversion coefficient and a current conversion coefficient, voltage and current conversion on the charging signal by means of a processing module connected in series between the LDO and the power management chip, to obtain an input signal of the power management chip, wherein a voltage of the charging signal is the requested voltage, and the current conversion coefficient is a reciprocal of the voltage conversion coefficient, characterized in that the determining, by the terminal, the voltage conversion coefficient according to the plurality of output voltages and the voltage threshold comprises: detecting, by the terminal, whether a maximum output voltage among the plurality of output voltages is higher than the voltage threshold; when it is detected that the maximum output voltage among the plurality of output voltages is higher than the voltage threshold, determining that the voltage conversion coefficient is a preset value smaller than 1, otherwise determining that the voltage conversion coefficient is 1.