Atomization assembly and aerosol forming device thereof

The utility model discloses an atomization assembly and an aerosol forming device thereof, an atomization support is arranged in an upper shell of the atomization assembly, an atomization cavity is formed in the atomization support, a heating liquid guide assembly is arranged in the atomization cavity, and a hollow heat insulation cavity is formed in at least one side of the atomization cavity in the atomization support. A through hole penetrating from the interior of the heat insulation cavity to the exterior of the atomization support is formed in the atomization support, air can enter the heat insulation cavity through the through hole, and the heat insulation cavity conducts heat insulation through the air in the cavity. Therefore, the atomization assembly of the embodiment is subjected to heat insulation through the air in the heat insulation cavity, the problem that the high temperature of the heating liquid guide assembly is transmitted to the handheld part of the aerosol forming device and scalds the