The invention discloses an information checking method and an information checking device. The information checking method comprises steps that a first terminal is used to log on a target account number, and target information in a chatting interface is hidden, and the target information is the synchronization information of the chatting information of the target account number on a second terminal; when a checking instruction triggered by a user is received, a checking request is transmitted to a server, and the checking request is provided with identity verification information input by the user; when feedback information about successful matching between the identity verification information returned by the server and preset information is received, the target information is displayed on the chatting interface of the first terminal. The synchronized chatting information is displayed on the terminal only after the identity verification, and the safety of the chatting information is improved.