Brake boosting system, brake boosting system control method and automobile

The invention discloses a brake boosting system, a brake boosting system control method and an automobile. The brake boosting system comprises a vacuum tank, a vacuum booster, a first sensor, at least two vacuum pumps, a second sensor and a controller. And the vacuum booster is communicated with the vacuum tank. And each vacuum pump is communicated with the vacuum tank. The first sensor is installed on the pedal and used for detecting the number of times of movement of the pedal in unit time and the stroke of the pedal. The second sensor is installed on the vacuum booster and used for detecting the vacuum degree of the vacuum booster. The first sensor, the second sensor and the vacuum pumps are all electrically connected with the controller, and the controller is used for controlling the first sensor to detect that the number of movement times of the pedal in unit time is smaller than or equal to a first threshold value and the stroke of the pedal is larger than or equal to a second threshold value. And when