The invention discloses a product two-dimension code generation and query system. The product two-dimension code generation and query system comprises a product information storage platform, a two-dimension code generator of manufacturers, and a query client side of clients, wherein the product information storage platform is connected with the two-dimension code generator of manufacturers and is used for storing original information of products and authenticity information of products, the two-dimension code generator of manufacturers encrypts the authenticity information of products and then mixes the authenticity information of products with the original information of products to generate two-dimension codes of products, and the query client side of clients is connected with the product information storage platform and is used for querying the original information and the authenticity information of products. The product two-dimension code generation and query system can be used for recognizing authenticity of commodities, can also carry out normal recognition, obtains useful information of commodities, can effectively guarantee uniqueness of article numbers of commodities, and prevents lawless persons from obtaining and forging two-dimension code labels of commodities through some unjustifiable means.