The unmanned clustered data link is a key communication system that realizes information interaction, operation control and task execution between the internal members of the unmanned platform clustered system and between external control stations. In view of the urgent application requirements of the current clustered UAV, a collaborative data link suitable for clustered information interaction is designed, which has the capabilities of large-scale, low latency, high reliability, global coverage, and anti-jam, and the key technologies used is analyzed.