Abstract: Safety of genetically modified food especially plant-derived genetically modified food are increasingly becoming attentive focus of the public. Many detection methods have been developed for the detection of discrimination and safe evaluation of plant-derived genetically modified food. PCR-derived technologies are sensitive and specific and so have provided rapid,accurate detection methods for plant-derived genetically modified food. PCR-derived technologies include multiplex PCR,real-time PCR,multiplex real-time PCR,multiplex nested PCR, multiple PCR- DHPLC. In this review, these PCR- derived methods should be summarized in brief.