In order to realize high precise measurement of high voltage,a uniform strain be am FBG vacuum electrostatic voltage sensor with temperature compensation functio n is proposed. The configuration and coating of the sensor are designed by the theoretical ana lysis of the working principle of the sensor.The high voltage electrostatic voltage sensing system is built based on the designed electrostatic voltage sensor,the high precise measurement of electrost atic voltage is realized,and it can achieve temperature self-compensation funct ion of sensor by using the same parameters of the twin-FBG structure scheme.The experimental results show that the sensor can measure DC voltage and AC root-mean-square voltage in 5－39kV.Moreover,the me asurement accuracy is 1.25% in 5－12kV and 0.55% in 12－39kV,and fitting degree of the s ensing curves is 0.99976. The sensor achieves the requirement of strong anti-interference ability,high p recision,reliability and stability.