The embodiment of the invention discloses an alliance chain system and an alliance chain accounting node communication method and device. The system comprises multiple accounting nodes, wherein the multiple accounting nodes comprise a target accounting node and the remaining accounting nodes, and the remaining accounting nodes are the accounting nodes other than the target accounting node in the multiple accounting nodes; the target accounting node is used for acquiring transaction information sent by a transaction node, initiating a consensus to the remaining accounting nodes based on the transaction information, and storing the acquired transaction information into a corresponding block if the consensus is successful; and geographical positions of enterprises corresponding to at least two accounting nodes in the multiple accounting nodes are different, and the multiple accounting nodes are located in the same local area network. Thereby, the target accounting node and the remaining accounting nodes can be timely communicated without spanning multistage gateways, a high data transmission speed can be achieved, and the user experience can be improved.