The invention discloses a frequency division multiple access one-to-many wireless energy transmission method and apparatus. The method comprises the following steps: detecting the return loss RLi of an energy transmission antenna of an energy transmission device when each energy transmission device is energized, i=1, 2,..., M; selecting and allocating power transmission frequency points for a power receiving device I, wherein the selection condition for the energized device i is the return lossand the distribution of the transmission energy frequency point RLth is the preset return loss threshold. Any two input frequency points are spaced apart by more than a value in the description. The center frequencies of the M energized antennas are adjusted to the output frequency band respectively. The bandwidth is adjusted to Delta f. The power transmission device generates ulti-channel monophonic signals with a frequency as in the description and the signals are synthesized into a polyphonic signal and the polyphonic signal is radiated out; The M energy receiving devices at the receiving end select their single-tone energy transmission signals from the multi-tone signals through their respective receiving antennas to realize one-to-many wireless energy transmission. The invention can solve the technical problems that the prior TR array energy transmission technology needs more TR emitting array elements and wireless emitting synchronization is difficult and the like.