This paper gathered information from the five sections including the planting origin, products category, harvesting, processing and packaging stages. Based on the national standard and coding rules, the tracing of genetically modified crops by UCC/EAN-128 bar code about five sections was designed and encipher. As the example of soybeans, the five sections were combined to make the integrity the UCC/EAN bar code. The consumer can obtain the information and trace the products through scanning the UCC/EAN-128 bar code, combining with the data received and the data from the computer database.%该文对转基因植物产品从产地、产品、采收、加工、包装等5个环节收集信息，并根据国家标准中规定相应编码规则对这5个环节进行UCC/EAN-128码的设计与编码。最后，以大豆为例，将这5个编码结合，形成一个完整UCC/EAN-128码。消费者通过扫描条形码，获取相关数据，并将获得数据与计算机建立的数据库相结合，进行信息读取，了解转基因植物产品的生产、加工、包装等信息，从而对转基因植物产品进行有效的溯源。
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