The utility model relates to an interactive whiteboard, which is characterized in that the interactive whiteboard comprises a plurality of whiteboard clients, a token server and a plurality of message servers which are used for storing data of whiteboard operation information and document state information, wherein the whiteboard clients send request information to the corresponding message servers through the token server, and the message server return the processed request information to the corresponding whiteboard clients through the token server. According to the utility, the interactive whiteboard is composed of a plurality of the whiteboard clients, a plurality of the message servers and the token server, and has flexible disposition and low cost. The number of the whiteboard client can be set flexibly in use, the implementation is simple, and the reliability is good. The interactive whiteboard provided by the utility model can be widely applied in various fields.