The essence of genetically modified organism security is an evaluation standard for humans to tolerate risk of ecological environment and risk of food safety caused by genetically modified organisms.As an important part of the ecological safety,genetically modified organism security has three characteristics: integrity,no reversibility and long-lasting.And the essence of genetically modified organism safety is that potential risks of genetically modified organism can be reduced and eliminated through risk analysis and evaluation and other sorts of methods.Since safety management of genetically modified organisms is becoming more and more serious,it is quite essential to ammend and make up the negative effects and inadequate parts of the existing security legislation of genetically modified organisms as soon as possible so as to meet people's demand of public value-the value of genetically modified organism safety.And legislation of genetically modified organism safety should set humanism as its value idea,social order as its value orientation and public safety as its value pursuit.