The invention discloses a cloud intelligent explanation system. An explanation device comprises a host, an electronic tag, an audio playing unit and a cloud server. The host comprises a central processing module, an electronic tag reading module, an audio output module and a communication module. The central processing module is used for determining audio information corresponding to the electronic tag and calling the corresponding audio information. The electronic tag reading module is used for reading the electronic tag and determining coding information of the electronic tag. The cloud server is used for storing the electronic tags and the audio information and determining the corresponding relations between the different electronic tags and the audio information. The communication module is used for sending the coded information to the cloud server and receiving audio information determined by the cloud server according to the coded information and the corresponding relation. The audio output module is used for sending the audio information to the audio playing unit. The technical problem that the explanation effect of the explanation equipment is inconvenient is solved.