A wireless charging transmitter, comprising: a transmitting component configured to transmit a wireless charging signal to a terminal to be charged to wirelessly charge the terminal; characterized in that the wireless charging transmitter further comprises: a detection component configured to detect whether there is a living body that has entered a preset range associated with the wireless charging transmitter, and determine, when detecting that a living body has entered the preset range, a direction or approximate position of the living body and correspondingly generate a detection signal carrying the direction or position information of the living body, wherein the preset range refers to a range within a preset radius centered on the wireless charging transmitter; an adjustment component connected to the transmitting component and configured to adjust a first transmitting power of the transmitting component to a second transmitting power when the detection signal indicates that there is a living body that has entered the preset range, the second transmitting power being smaller than the first transmitting power; and a ranging component, connected to the adjustment component and configured to detect a first distance between the living body and the wireless charging transmitter, wherein the adjustment component is further configured to generate a trigger signal when the detection signal indicates that there is a living body that has entered the preset range, and send the trigger signal to the ranging component, the trigger signal comprises the direction or approximate position of the living body; the ranging component is further configured to transmit, by using the direction or position information of the living body as an initial position based on the trigger signal, a ranging signal and receive a reflected signal of the ranging signal, and determine the first distance based on the ranging signal and the reflected signal; and the adjustment component is further configured to determine the second transmitting power based on the first distance. a detection component configured to detect whether there is a living body that has entered a preset range associated with the wireless charging transmitter, and determine, when detecting that a living body has entered the preset range, a direction or approximate position of the living body and correspondingly generate a detection signal carrying the direction or position information of the living body, wherein the preset range refers to a range within a preset radius centered on the wireless charging transmitter; an adjustment component connected to the transmitting component and configured to adjust a first transmitting power of the transmitting component to a second transmitting power when the detection signal indicates that there is a living body that has entered the preset range, the second transmitting power being smaller than the first transmitting power; and a ranging component, connected to the adjustment component and configured to detect a first distance between the living body and the wireless charging transmitter, wherein the adjustment component is further configured to generate a trigger signal when the detection signal indicates that there is a living body that has entered the preset range, and send the trigger signal to the ranging component, the trigger signal comprises the direction or approximate position of the living body; the ranging component is further configured to transmit, by using the direction or position information of the living body as an initial position based on the trigger signal, a ranging signal and receive a reflected signal of the ranging signal, and determine the first distance based on the ranging signal and the reflected signal; and the adjustment component is further configured to determine the second transmitting power based on the first distance.