Heater and heating atomization device

The utility model relates to a heater and a heating atomization device, the heater comprises a thermal circulation assembly, the heater is provided with a containing cavity, a circulation channel and an air inlet channel, the containing cavity is used for containing an atomization medium carrier, the air inlet channel is communicated with the outside and one end of the containing cavity, and the two ends of the circulation channel are respectively communicated with the two ends of the containing cavity. The heat cycle assembly is arranged in the heater; when the heat circulation assembly works, gas entering the containing cavity from the outside through the gas inlet channel is heated, and the gas in the containing cavity can pass through the circulation channel and then enter the containing cavity to form a circulation loop. The gas entering the containing cavity from the circulation channel has certain heat, the heat in the gas can be absorbed by the atomization medium carrier, the heat is prevented from be