Infrared heating element of aerosol generating device and aerosol generating device

The invention relates to an infrared heating element of an aerosol generating device and the aerosol generating device, and the infrared heating element comprises an infrared light-transmitting part, the infrared light-transmitting part is provided with an aerosol substrate accommodating part and a vacuum cavity which are independently arranged, and the vacuum cavity is located on the outer side of the aerosol substrate accommodating part; a reflecting layer is arranged on at least part of the outer surface of the infrared light-transmitting piece; the heating piece is contained in the vacuum cavity, and the two free ends of the heating piece extend out of the infrared light transmitting piece; the electrode is connected with the two free ends of the heating element; when the electrode is electrified, infrared light generated by electric conduction and heating of the heating piece penetrates through the infrared light-transmitting piece to heat the aerosol matrix in the aerosol matrix containing part. Accordi