Abstract: In view of the multi-source heterogeneity of data link messages, a solution for integrating data link messages through ontology technology is proposed. Through the interoperability of message semantics, the unified processing of multiple data link sources by the combat platform is realized, and the ontology semantics and operations are realized. Apply close contact to achieve rapid exchange and sharing of information. The research focuses on the construction of the message ontology of multi-source heterogeneous data links, and summarizes the key technologies and methods involved in it, in order to explore the best method of data link message ontology construction.