An overvoltage protection method for an electronic governor in an aerial vehicle, wherein the electronic governor is configured to control a motor, and the method comprises: collecting a direct current, DC, bus voltage of the electronic governor; when the DC bus voltage is greater than a first voltage threshold and less than or equal to a second voltage threshold, adjusting a control parameter of the electronic governor based on a difference between the DC bus voltage and the first voltage threshold, such that the electronic governor controls the motor based on the adjusted control parameter to restrain a further rise of the DC bus voltage, wherein the second voltage threshold is greater than the first voltage threshold; characterised in that adjusting the control parameter of the electronic governor based on the difference between the DC bus voltage and the first voltage threshold, comprises: generating a superimposition parameter based on the difference between the DC bus voltage and the first voltage threshold and a preset PI control algorithm; performing superimposition processing on the superposition parameter and the control parameter based on a direction of a current speed of the motor, such that the electronic governor controls a rotational speed of the motor based on the superimposed control parameter; and in that performing the superimposition processing on the superposition parameter and the control parameter based on the direction of the current speed of the motor, comprises: when the direction of the current speed of the motor is a forward direction, superimposing the superposition parameter to the control parameter; when the direction of the current speed of the motor is a reversal direction, superimposing a negative of the superposition parameter to the control parameter. collecting a direct current, DC, bus voltage of the electronic governor; when the DC bus voltage is greater than a first voltage threshold and less than or equal to a second voltage threshold, adjusting a control parameter of the electronic governor based on a difference between the DC bus voltage and the first voltage threshold, such that the electronic governor controls the motor based on the adjusted control parameter to restrain a further rise of the DC bus voltage, wherein the second voltage threshold is greater than the first voltage threshold; characterised in that adjusting the control parameter of the electronic governor based on the difference between the DC bus voltage and the first voltage threshold, comprises: generating a superimposition parameter based on the difference between the DC bus voltage and the first voltage threshold and a preset PI control algorithm; performing superimposition processing on the superposition parameter and the control parameter based on a direction of a current speed of the motor, such that the electronic governor controls a rotational speed of the motor based on the superimposed control parameter; generating a superimposition parameter based on the difference between the DC bus voltage and the first voltage threshold and a preset PI control algorithm; performing superimposition processing on the superposition parameter and the control parameter based on a direction of a current speed of the motor, such that the electronic governor controls a rotational speed of the motor based on the superimposed control parameter; and in that performing the superimposition processing on the superposition parameter and the control parameter based on the direction of the current speed of the motor, comprises: when the direction of the current speed of the motor is a forward direction, superimposing the superposition parameter to the control parameter; when the direction of the current speed of the motor is a reversal direction, superimposing a negative of the superposition parameter to the control parameter.