The application provides an information dissemination system including a first electronic device and a router. The first electronic device receives a first sound signal and recognizes the first sound signal according to a speech recognition algorithm to generate a first address information and a first coded information content. The router is connected to a local area network to receive the first encoded information content and semantically parse the first encoded information content to produce a parsed result. The router sends the parsed result over local area network. The router determines whether the first address indicated by the first address information is in the local area network according to the first address information, so as to send the parsed result to at least a second electronic device corresponding to the first address.