The embodiment of the invention provides an information management system and method. Through establishing a system architecture of a mobile terminal, a support server and a block chain interaction middleware, the mobile terminal is used for receiving a request input by a user and scanning a two-dimensional code on a product, identity information of the user is verified through a supporting server, block chain interaction middleware is used for analyzing the request of the user, a corresponding analysis result is stored in a block chain, and the analysis result is returned to the mobile terminal. Therefore, the information stored in the block chain cannot be tampered, the authenticity and effectiveness of the information are guaranteed, and credible traceability of the product informationis realized.