Abstract: On July 7, 2016, the President Obama signed the Act 764 for enforcing National Bioengineered Food Disclosure Standards, which indicates a major change in the labeling system of genetically modified food (GMF) in the United States of America (USA): from the voluntary labeling system to the mandatory labeling system. This Act requires the companies to provide information on GMF, in order to protect the consumer’s right to know. At the same time, the disclosure standard is a product-oriented standard and allows the application of a variety of forms to disclose information, including the two-dimensional code, thereby facilitating manufacturers to fulfill their obligations. To a certain extent, the USA mandatory GMF labeling system balances the interests of consumers and producers. This GMF labeling system can provide valuable information for China to perfect its GMF labeling system.

Key words: genetically modified food, mandatory labeling system, voluntary labeling system