Heating circuit and aerosol generating device

The utility model discloses a heating circuit, which is used for an aerosol generating device, and comprises an electronic switch driving circuit, one end of which is connected with an external control source so as to receive and shape a PWM (Pulse Width Modulation) signal; the other end of the control circuit is connected with the grid electrode of the electronic switch, and the control circuit controls the heating circuit to be in a working state or a non-working state according to the fact that the duty ratio of the shaped PWM signal is a non-zero value or a zero value; one end of the charge release circuit is connected with the other end of the electronic switch driving circuit and the grid, and the other end is grounded; one end of the oscillating circuit is connected with the power supply, the other end is connected with the drain electrode, and when the heating circuit is in a working state, the oscillating circuit can generate induced current; and one end of the high-voltage suppression circuit is con