The invention discloses an information publication method and device and relates to the technical field of information with an aim to prevent a user from publishing the same information repeatedly. The method includes: according to content of to-be-published information, acquiring first logos of the to-be-published information, wherein one piece of information content corresponds to one first logo; when the first logos of the to-be-published information are identical to the first logos of information stored in retransmission prevention cache and second logos corresponding to the first logos exist, sending the second logos to the user; when the first logos of the to-be-published information are identical to the first logos of the information stored in the retransmission prevention cache and the second logos corresponding to the first logos do not exist, sending repeatedly-published error information to the user. The information publication method and device are applicable to being adopted in information publication.