Train cross-core network communication method, device and equipment and storage medium

The invention discloses a train cross-core network communication method, device and equipment and a storage medium. The method comprises the following steps: respectively determining a first column head communication IP and a first column tail communication IP allocated by the column head communication equipment and the column tail communication equipment in a first domain name server according to equipment identifiers of the column head communication equipment and the column tail communication equipment; the first domain name server is a domain name server of a first core network; determining whether the column head communication equipment enters a second core network or not; if it is determined that the train head communication device enters the second core network, communication connection between the train tail communication device in the first core network and the train head communication device in the second core network is established through a second train head communication IP and the first train tai