Aerosol generating device and system

The utility model provides an aerosol generating device and system. The aerosol generating device comprises an accommodating cavity and an electromagnetic coil, the accommodating cavity is used for accommodating an aerosol generating product; the aerosol generating product comprises an aerosol generating substrate and a metal layer, and the metal layer wraps the aerosol generating substrate in the circumferential direction of the aerosol generating substrate; the electromagnetic coil is a planar electromagnetic coil arranged on the outer side of the accommodating cavity and is used for generating a changing magnetic field when being electrified; the metal layer generates heat in a varying magnetic field through electromagnetic induction to heat the aerosol-generating substrate to form an aerosol. According to the aerosol generating device, the environmental protection problem caused by central heating of the heating body is avoided, meanwhile, the requirement of the heating body on the aerosol generating devi