This Standard specifies the PCR method and real-time fluorescence PCR method of detecting genetically modified components in maize and maize-processed products. The screening detection of this Standard applies to qualitative detection of genetically modified components in maize and maize-processed products. Identification detection of this Standard applies to qualitative detection of genetically modified components of maize lines MON810, Bt11, Bt176, T14/T25, CBH351, GA21, MON863, NK603, TC1507, MON88017, 59122, MIR604, MIR162, DBT418, MON89034, LY038, ES3272, Bt10, and DP98140.