A far-infrared emitting device comprises a concave cup container, a circuit board, a light-emitting diode, a package rubber and a far-infrared material, wherein the circuit board is disposed in the concave cup container, and the light-emitting diode system is soldered to the circuit On the board, the encapsulating material is filled in a concave cup container provided with a circuit board, and the far infrared ray material is mixed in the encapsulating material, and the circuit board is provided with a conductive line, an electronic component and a light emitting diode. After the circuit board is energized, the light-emitting diode emits heat, and the device can generate light of a specific wavelength range while improving the far-infrared emissivity of the far-infrared material.一種遠紅外線發射裝置,包括有凹盃容器、電路板、發光二極體、封裝膠材及遠紅外線材料所組成,該電路板係設置於凹盃容器之內,該發光二極體係焊接於電路板上,該封裝膠材係填充於設置有電路板之凹盃容器內,該遠紅外線材料係混合於封裝膠材之中,該電路板上設置有導電線路、電子元件與發光二極體,電路板通電後,利用發光二極體發光發熱,本裝置可以產生特定波長範圍之光線,同時提高遠紅外線材料之遠紅外線發射率。