Clutch booster assembly of automobile

The utility model relates to the field of booster assemblies, in particular to a clutch booster assembly of an automobile, which comprises an outer shell, force applying mechanisms and a force unloading mechanism, and the force applying mechanisms used for pushing a booster component are arranged on two sides and inside the outer shell. When the clutch pedal is stepped on, high-pressure brake fluid in the clutch master cylinder is input into the oil cavity from the oil inlet and acts on the left ends of the relay piston and the booster cylinder piston, on one hand, the booster cylinder piston is pushed to drive the push rod to generate rightward thrust, and on the other hand, the relay piston is pushed to move upwards to open the valve assembly. Compressed air enters the left side of a piston of the booster cylinder through the air inlet, under the simultaneous action of air pressure and hydraulic pressure, the telescopic rod stably moves leftwards, the sealing plug is driven to be opened from the deflation p