Genetically modified food regulation is not only related to the development of genetically modified food industry,but also related to the protection of consumer rights closely.Currently,there are three legal systems of genetically modified food regulation in the world:the United States’,the European Union’s and Japan’s.Through the analysis of genetically modified food regulatory principles,regulatory subjects and identification system in the United States,Europe and Japan to understand the reasons for differences in three kinds of systems,we get the inspiration that the regulation of genetically modified foods in China should also be based on protecting native interests and China’s traditional culture and popular ideas,so that we can choose the appropriate regulation system and carry out monitoring appropriately in China.