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Browning button mushroom of Agaricus Bisporus is a common phenomenon which enzymaticaly convert melonogenic phenols to quinones and eventually produce melanin pigments. Browning button mushroom is detrimental to business of agriculture and food business. This review article surveys methods of inhibiting the enzymatic browning Agaricus Bisporus include: thermal inactivation, high isostatic pressure, gamma irradiation, thiol componds, calcium chloride added to the irrigation water, inactivators and inhibitors and its effects on enzymatic browning of Agaricus Bisporus. Keywords: Agaricus bisporus, Enzymatic browning, Polyphenol oxidase, Microwave, Inhibitors