A system for product management and authentication of the present invention includes a management platform, a first database and a second database. The first database and the second database are respectively connected with management platform. The management platform includes an input unit, an output unit and an authentication unit. The input unit includes a special identification code and a mobile code. The special identification code provides the network access device to register and login. The users include a vendor and a consumer. The second database receives the product information of the first database for language conversion. The network access device provides a selection from a list of available languages via the mobile code and displays the product information in a selected language. The authentication unit provides an authentication code which provides the network access device to register and login to check the authenticity of the product, and to avoid counterfeit to protect the rights and interests of consumers.