The utility model discloses a power supply board of safe flight guarantee equipment, which belongs to the technical field of power supply boards and comprises a power supply input unit, a power supplyoutput unit and a power supply brick used for converting input voltage into output voltage. The switch conversion unit is used for controlling a power switch; and the protection circuit unit is usedfor improving the anti-interference capability of the power panel by reducing common-mode noise and differential-mode noise, and comprises an input filter circuit and an output filter circuit. Compared with the prior art, the power supply board of the safe flight guarantee equipment can effectively realize stable output of the power supply, and improves efficient work of the safe flight guaranteeequipment.