Dry burning prevention device of electronic cigarette and control method thereof

The invention relates to an anti-dry heating device of an electronic cigarette and a control method thereof. The anti-dry burning device of the electronic cigarette comprises a microcontroller, a lifting pressure bridge circuit, an atomizer resistance value sampling circuit, an atomizer resistance value detection module and a battery power supply circuit, wherein the microcontroller is sequentially electrically connected with the lifting pressure bridge circuit, the atomizer resistance value sampling circuit, the atomizer and the atomizer resistance value detection module and then connected back to the microcontroller, the atomizer resistance value sampling circuit is also electrically connected with the atomizer resistance value detection module, a feedback circuit is connected between the atomizer resistance value sampling circuit and the lifting pressure bridge circuit and connected back to the microcontroller so that the microcontroller can adjust the output voltage of the lifting pressure bridge circuit and keep stable, when the electronic cigarette is in use and the tobacco juice is exhausted quickly, the atomizer resistance value detection module detects that the resistance value of the atomizer continuously exceeds the set times of dry burning protection set resistance value, the microcontroller instructs the lifting pressure bridge circuit to close the output, the electronic cigarette automatically stops working.