The utility model provides an unmanned electric automobile vacuum servo brake control system belongs to the automobile braking technology field, includes panel board, electric vacuum pump, check valve, vacuum sensor I, vacuum air chamber, alarm, transition ring, felt transition ring, vacuum thrustor, valve I, servo motor I, valve II, servo motor II and ecu. The utility model discloses well vacuum booster is a preceding air chamber only, is different from the structural style of two traditional air chambers. Servo motor I and I, servo motor II on the valve and valve II are rigid connection, and the accuracy is the adjusting valve aperture fast. Last gas pocket I and II two gas pockets at the gas pocket of being provided with of air chamber shell body, one of them gas pocket passes through the adjusting valve aperture and can feed through with the atmosphere, can bleed or exit through motor adjusting valve by oneself, so can be used to in unmanned electric automobile's the vacuum thrustor. The utility model discloses it is good as the application development prospect to use unmanned electric automobile.