The invention discloses a retransmission method for a high availability cluster heartbeat message, belonging to the cluster communication field, the method comprises the steps as follows: judging whether the heartbeat message is the continuous message after receiving the heartbeat message by a current node, finding whether the source node of the message is on the AVL tree, if yes, the message is the discontinuous message, broadcasting and requesting for retransmission of the message; if not, the message is the continuous message, and there is no need to broadcast for retransmission; finding the serial number of discontinuous message of current cluster node on the AVL tree, requesting the current cluster node for retransmitting the lost message according to the serial number of discontinuous message; for the continuous message, the current node directly processes the message; the retransmission method for the high availability cluster heartbeat message can reduce the multicast storm in the local area network while the node network has shock, above all, the viable nodes can be avoided for retransmitting the request message limitlessly for impacting normal work of the other nodes in the local area network under the circumstance that the node quits the local area network after having transience shock.