Message transmission method and device, base station, system and storage medium

The invention relates to a message transmission method and device, a base station, a system and a storage medium, and the method is applied to the base station, and comprises the steps: obtaining a downlink terminal IP message, the downlink terminal IP message comprises a target device IP of a terminal subordinate device; under the condition that the IP header protocol field information of the downlink terminal IP message is preset information, determining a target terminal IP corresponding to the target device IP according to an IP mapping relation table; packaging the target terminal IP into an IP layer of the downlink terminal IP message to generate a downlink IP message; and sending the downlink IP message to a target terminal corresponding to the target terminal IP. According to the scheme, the terminal IP corresponding to the equipment IP is found by querying the IP mapping relation table, packaged in the message and then issued, so that the lower layer module of the base station can find the related te