The invention discloses an electric power short trigger optical fiber applied to an extra-high voltage direct current valve control system. The electric power short trigger optical fiber applied to the extra-high voltage direct current valve control system comprises cladding, a fiber core and a covering layer, wherein the optical fiber is a quartz glass optical fiber, the diameter of the fiber core is 200 mum, the core diameter of the cladding is 235 mum, and the outer diameter of the optical fiber is 500+/-20 mum; according to optical fiber parameters, a refractive index profile type is a step index type, the wave length is 940 nm, a numerical aperture NA is 0.22, and an optical fiber attenuation coefficient is 8 dB/km. The outer portion of the optical fiber is covered by an ETFE outer protection material, an ST-type connector is arranged at one end of the optical fiber, and an L-type tin bronze metal connector is arranged at the other end of the optical fiber. According to the electric power short trigger optical fiber applied to the extra-high voltage direct current valve control system, localization replacement is conducted on the imported electric power short trigger optical fiber, the purchase cost is reduced, a supplying cycle is shortened, a technical support can be provided, replacement and maintenance are convenient, the heat resistance and insulation performance areimproved, the problems that the imported optical fiber is large in attenuation, easy to damage and inconvenient to maintain are solved, and the running reliability of the extra-high voltage direct current system is improved.