The utility model provides a heating
assembly and an
aerosol generating device, and the heating
assembly comprises a heating substrate which is a zirconia cast sheet; the heating layer is arranged on the heating base body, the heating layer and the heating base body are jointly wound to form a hollow
barrel, the
aerosol generating product is suitable for being inserted into the
barrel-shaped structure, and the heating layer is arranged on the radially inward surface of the heating base body; an insulating layer is arranged on the side, away from the heating base body, of the heating layer. The heating base body of the heating
assembly is the
zirconium oxide cast sheet, and the
thermal conductivity of the
zirconium oxide cast sheet is low, so that when the heating assembly is heated in a segmented mode,
heat transfer between different segments is small, the heating assembly can control heating in a segmented mode conveniently, in addition, heat can be prevented from being transferred to a plugging segment of an
aerosol generating product, and the sealing performance of the aerosol generating product is improved. And the blocking section is prevented from being baked, so that a user can obtain good taste.