The development of future combat and equipment shows a trend of systematization,intelligence, and fighting. Based on the new engagement concepts of “Distributed defense” and “Mosaic warfare”, the characteristics of future joint engagements such as dispersal node, flexible architecture, dynamic organization and intelligent coordination are proposed. And the system of system (SoS) intelligence is indicated as the advanced stage of military intelligence development. Furthermore, according to the development process of information and intelligent technology, as well as the influence of scientific and technological revolution on weapons and engagement forms, the evolution law of the system of system intelligence is put forward. It will evolve towards the direction of automation, autonomy and self-evolution. Finally, on the basis of the mission of the system of system development and the main direction of construction, some enabling technologies of future system of system intelligence are given. It will provide potential theoretical guidance for form, architecture, operation and engagement effectiveness of the system of system.