The invention discloses a photonic crystal filter for a thermophotovoltaic cell and application thereof. The photonic crystal filter is formed by a substrate and a two-dimensional photoconductive antenna. The two-dimensional photoconductive antenna comprises an ultra thin metal piece which is provided with a micro pore structure. According to the photonic crystal filter for a thermophotovoltaic cell, the selective transmission of the spectrum of effective power generation is carried out, and the spectrums of other bands are recovered and reused.