The invention discloses an information interaction method and a device and belongs to the technical field of networks. The method comprises the steps of acquiring identification information corresponding to a designated public identification from a specific page, generating a verification certificate acquisition request according to the identification information, calling a verification certificate acquisition interface, transmitting the verification certificate acquisition request to an Internet application server via the verification certificate acquisition interface, receiving a verification certificate returned by the Internet application server via the verification certificate acquisition interface, and calling an Internet application interface for information interaction after the verification certificate passes verification, wherein the identification information comprises an identity and a key, and the Internet application server is a server providing service to an Internet application. Since the safety verification is carried out based on the verification certificate during the information interaction, the information interaction safety can be guaranteed.