The utility model relates to an optical fiber type voltage measurement apparatus for measuring various transient voltages in an electric power electric network system. The optical fiber type voltage measurement apparatus consisting of a front-end processor with an external metal induction polar plate, an optical fiber, a light-to-current inversion module and a computer part, wherein, the induction polar plate and the shielding cabinet of the front-end processor form a capacitance type voltage transducer. When the measurement is performed, the metal sensing polar plate is placed on the surface of a high-voltage conductor to be measured, the capacitances formed respectively by the sensing polar plate and the high-voltage conductor to be measured and the ground form a capacitive voltage divider, after the voltage dividing ratio of the capacitive voltage divider and the voltage value of the capacitance between the sensing polar plate and the high-voltage conductor to be measured are measured, the voltage valued between the high-voltage conductor to be measured and the ground can be obtained through conversion. Comparing with the prior art, the optical fiber type voltage measurement apparatus can measure voltage by using a capacitance type voltage transducer to measure the field strength of the surface of a charged body directly, and the optical fiber type voltage measurement apparatus has good measurement character, simple structure and convenient use.