The invention discloses a device for removing sprues of an automobile brake pedal assembly. The device comprises an upper fixing plate, punching knives, a lower fixing plate and a positioning die, wherein the upper fixing plate is connected to a retractable device, the punching knives are used for cutting off the sprues of the automobile brake pedal assembly and are connected to the upper fixing plate, the positioning die is arranged on the lower fixing plate, and a profiling surface used for positioning the automobile brake pedal assembly is arranged on the positioning die. According to the device, the automobile brake pedal assembly is placed on the positioning die, then the retractable device is started to enable the upper fixing plate to move downwards, the punching knives move downwards along with the upper fixing plate to cut off the sprues on the automobile brake pedal assembly, and then only fine polishing needs to be carried out on the automobile brake pedal assembly. The device has the advantages that the sprues can be automatically punched and cut, the polishing procedure is simplified, and therefore the labor intensity of workers can be reduced, the production efficiency can be improved, and the cost of products can be reduced; and in addition, punching pins can be additionally arranged to be used for punching burrs inside assembling holes.