HEATER AND AEROSOL-GENERATING DEVICE

This application provides a heater and an aerosol-generation device. The heater includes: a base body; an infrared electric heating film, formed on a surface of the base body, the infrared electric heating film including doped tin oxide and doping elements of the doped tin oxide including non-metal elements; and the infrared electric heating film being configured to generate infrared ray and heat the aerosol-forming substrate at least in a radiation manner; and a conductive portion, including a first electrode and a second electrode arranged on the base body, and both the first electrode and the second electrode being electrically connected to the infrared electric heating film to feed electric power of a power supply to the infrared electric heating film. According to this application, an infrared electric heating film including doped tin oxide is formed on a base body, and doping elements of the doped tin oxide facilitate to improve the conductive performance and the infrared radiation efficiency of the infrared electric heating film. When an aerosol-forming substrate is heated by the infrared electric heating film through radiation, the aerosol-forming substrate has a high center temperature and a short preheat time and is uniformly heated.