Embodiments of the present disclosure provide a wireless charging system, a wireless charging device, and a wireless power receiving device, and relate to the field of wireless charging. The system includes a wireless charging device and a wireless power receiving device. The wireless charging device includes a wireless charging module, a first function module, and a first communication module, and the wireless charging module includes a radio frequency transmitting antenna; the wireless power receiving device includes a wireless power receiving module, a second function module and a second communication module; the wireless charging module is configured to supply power to the wireless power receiving device through the radio frequency transmitting antenna; and the first function module and the second function module communicate with each other through the first communication module and the second communication module.