Atomization assembly and aerosol forming device thereof

The invention discloses an atomization assembly and an aerosol forming device thereof.The atomization assembly is characterized in that an atomization support is arranged in an upper shell of the atomization assembly, an atomization cavity is formed in the atomization support, a heating and liquid guiding assembly is arranged in the atomization cavity, and a heat insulation cavity is formed in the portion, located on at least one side of the atomization cavity, of the interior of the atomization support; a hollow vacuum cavity is arranged in the heat insulation cavity, and the heat insulation principle of the heat insulation cavity is the same as that of a thermos bottle with a vacuum container; therefore, the atomization assembly is subjected to heat insulation through the hollow vacuum cavity in the heat insulation cavity, the problem that the high temperature of the heating and liquid guiding assembly is transmitted to the handheld part of the aerosol forming device to scald the hand can be effectively sol