Information managing method, two-dimension code generating method and relative devices

The embodiment of the invention discloses an information managing method, a two-dimension code managing method and relative devices, which are used for improving experience of a user. The method comprises the following steps of: acquiring two-dimension code information of a product, and then acquiring and counting user information of a second user, which corresponds to a source identifier, wherein the two-dimension code information comprises the source identifier and a channel identifier; the source identifier is a two-dimension code identifier or product information on which the product transaction initiated by a first user is based; and the channel identifier is a two-dimension code identifier which is generated after the product transaction is finished and corresponds to user information of the first user.