The invention relates to a gasket processing device. The gasket processing device is characterized in that the gasket processing device includes a lower die seat, an upper die seat, a guiding mechanism and a punching mechanism; the guiding mechanism includes guiding pillars arranged symmetrically at two ends of the top surface of the lower die seat, guiding sleeves arranged at the ends, away fromthe lower die seat, of the guiding pillars in a sleeving mode and springs arranged between the inner parts of the guiding sleeves and the lower die seat, and the guiding sleeves can move up and down in the perpendicular direction of the guiding pillars; the punching mechanism includes a material ejecting rod, a material ejecting disc, an upper die plate, a female die, a male die, an upper discharging plate, a lower discharging plate, a discharging rod, a lower die and a rubber blanket; and the punching mechanism is guided by the guiding mechanism to reciprocate in the vertical direction, and punching is finished through the action of the female die, the male die and the lower die. The device is used for processing gaskets, the blanking-punching process can be finished at the same positionof a die at the same time, and the production efficiency is high.