Tactical Targeting Networks Technology is aeronautical Ad hoc networks based on IP. It is an advanced weapon data link that is been developed for military of the United States. The basic information, technology characteristic and performance index of TTNT are introduced, development history is reviewed, key technologies are analysis to go into further study. The media access control protocols, routing protocols and transmitter terminal are designed to attack time sensitive targets, and transmitter terminal are designed to attack time sensitive targets, and achieve the low delay of air-air and air-ground aeronautical communication.