The present invention discloses an aerosol generator (100), an electronic cigarette, and a detachable atomizing device. The aerosol generator includes a housing (101), a storage chamber (102), a heating device (300), and an aerosol discharging channel (103). The storage chamber is formed in the housing and configured for storing an aerosol forming substance. The heating device is disposed in the housing and configured for heating the aerosol forming substance to generate aerosol. The aerosol discharging channel is configured for discharging aerosol generated by the aerosol forming substance to the outside of the housing. The heating device includes a quartz glass body (303) and a heating element (304). The heating element is encapsulated inside the quartz glass body, and the heating element is capable of generating thermal radiation and infrared radiation outwardly through the quartz glass body to heat the aerosol forming substance.
