The general information requirements of the US military in air combat is analyzed. Taking the air strike againstground "Time Sensitive Target (TST)" as an example, it sorts out the operational process and basic information requirements.Combined with the Link-16 system message family, it studies the information application process of each stage of air strike groundTST combat, and gives an overall design process from operational application information requirements message process, providesreference for the application research of combat information in military information system.