Abstract: A heating system includes: a control device, a power supply device and a heating circuit. The heating circuit includes a heating component and a current control component. The power supply device is used to provide a heating current for the heating circuit. The heating component is used to heat the camera with the heating current. The current control component is used to adjust a resistance of the heating circuit. The resistance is negatively correlated with a current passing through the heating circuit. The control device is used to control the power supply device to adjust a current value of the heating current from a first current value to a second current value after detecting that the heating component enters a non-energized state from an energized state. The second current value is less than the first current value.