Measuring equipment and method for reducing capacitance coupling type voltage based on voltage follower circuit

The invention provides a coupling type voltage measuring device for reducing capacitance based on a voltage follower circuit, a measuring circuit is arranged in the measuring device, the measuring circuit is characterized in that a low-voltage area capacitor C2, an integrating capacitor C3 and an input resistor R2 are connected in parallel between an input voltage Ui and an output voltage U0, and a high-voltage area capacitor C1 is connected in series on the side, close to the input voltage Ui, of the low-voltage area capacitor C2; an integrating resistor R1 is connected in series between the low-voltage area capacitor C2 and the integrating capacitor C3; the high-voltage area capacitor C1, the low-voltage area capacitor C2 and the input resistor R2 are combined to form a differentiating circuit, an integrating circuit formed by the integrating resistor and the integrating capacitor can convert a high-voltage signal into a low-voltage signal, and the low-voltage signal is transmitted to an external data acqui