The invention discloses a medium corrosion-resistant fluorubber sealing gasket and a production method thereof. The sealing gasket is produced from, by weight, 30-50 parts of perfluoroether rubber, 20-40 parts of chloroprene rubber, 4-8 parts of bisphenol AF, 6-9 parts of white factice, 2-4 parts of thioisobutyramide, 19-33 parts of cancrinite powder, 12-24 parts of asbestos wool, 4-5 parts of diperoxocarbamate, 15-20 parts of colloid graphite powder, 3-5 parts of tetraethylammonium chloride, 7-11 parts of C5 petroleum resin, 4-6 parts of 1,2,3,4,5-pentachlorobibenzene, 20-30 parts of carbon black N990, 2-3 parts of 2,2'-methylenebis(4-ethyl-6-tert-butyl phenol), 1-2 parts of N-phenyl-2-naphthylamine and 15-20 parts of a modifier. The sealing gasket produced in the invention has the advantages of very protruding medium corrosion resistance, resistance to oil, acids, alkalis, salts, ethers, alcohols, water vapor and other corrosive media, and excellent wear, ageing and high temperature resistance.