The utility model discloses a processing device for an oil-resistant rubber mat. Operating platform, a driving mechanism capable of driving the first movable sliding table and the second movable sliding table to move oppositely is installed on the operation table, a cutting device is hinged to the operation table, cutters corresponding to the first movable sliding table and the second movable sliding table respectively are arranged on the cutting device, and oil-resistant rubber mat fixing devices are arranged on the first movable sliding table and the second movable sliding table respectively. A constant-temperature cover covering the operation table is fixedly installed on the operation table, a temperature sensor is arranged in the constant-temperature cover, and a heating device is fixedly installed on the constant-temperature cover. According to the utility model, the rubber mat can be effectively and accurately cut and bonded; the constant-temperature cover and the heating deviceare arranged, so that the most appropriate temperature and the most appropriate notch can be provided for rubber mat processing in a complex field environment, the defects caused by poor external environment are avoided, good bonding of the rubber mat is guaranteed, and the quality of a gasket finished product is greatly improved.