A wireless charging transmit end, configured to wirelessly charge a receive end, and comprising a signal processing apparatus and a dual-polarized antenna, wherein the dual-polarized antenna comprises at least one dual-polarized element; each dual-polarized element comprises a first linearly polarized element and a second linearly polarized element that are mutually orthogonal; the first linearly polarized element is configured to receive a first wireless signal from the receive end, and the second linearly polarized element is configured to receive a second wireless signal from the receive end; the signal processing apparatus is configured to: obtain a first energy signal and a second energy signal based on a waveform relationship between the first wireless signal and the second wireless signal, send the first energy signal to the first linearly polarized element, and send the second energy signal to the second linearly polarized element; the first linearly polarized element is configured to transmit the first energy signal to the receive end; the second linearly polarized element is configured to transmit the second energy signal to the receive end; so as to combine the first energy signal and the second energy signal into an energy signal matching a polarized antenna of the receive end, characterized in that the signal processing apparatus is specifically configured to obtain a phase difference between the first wireless signal and the second wireless signal, and obtain an amplitude ratio between the first wireless signal and the second wireless signal; and generate the first energy signal and the second energy signal based on the phase difference and the amplitude ratio, wherein the phase difference and the amplitude ratio exist between the first energy signal and the second energy signal. each dual-polarized element comprises a first linearly polarized element and a second linearly polarized element that are mutually orthogonal; the first linearly polarized element is configured to receive a first wireless signal from the receive end, and the second linearly polarized element is configured to receive a second wireless signal from the receive end; the signal processing apparatus is configured to: obtain a first energy signal and a second energy signal based on a waveform relationship between the first wireless signal and the second wireless signal, send the first energy signal to the first linearly polarized element, and send the second energy signal to the second linearly polarized element; the first linearly polarized element is configured to transmit the first energy signal to the receive end; the second linearly polarized element is configured to transmit the second energy signal to the receive end; so as to combine the first energy signal and the second energy signal into an energy signal matching a polarized antenna of the receive end, characterized in that the signal processing apparatus is specifically configured to obtain a phase difference between the first wireless signal and the second wireless signal, and obtain an amplitude ratio between the first wireless signal and the second wireless signal; and generate the first energy signal and the second energy signal based on the phase difference and the amplitude ratio, wherein the phase difference and the amplitude ratio exist between the first energy signal and the second energy signal.