Maize and other crops are easy to be damaged and decay triggered by pathogen infection during growth,harvesting, storage, and transportation. Mycotoxins are secondary metabolites produced. Some mycotoxins have acute or chronic toxicity which not only result in huge economic losses, but also have brought great threaten to animals and humans through the transmission of food chains. Therefore, many countries have established regulations on maximum residue levels for mycotoxins in crops and crops products. This review summarized the present domestic and international existing standards of the maximum residue levels for crops mycotoxins, compared and analyzed the existing main mycotoxin standards in crops and crops products. Problems on this issue and study direction of regulation technology in the future was also discussed.