The operation environment of business jet requires high level of interaction design. Flight deck is the main place of human-machine interaction in aircraft operation, and the quality of interaction design affects directly flights’ safety and users’ experience. This article introduces the development history and current situation of interaction design, and lists six basic design principles that needs to be followed, in the interaction design process, and analyses the basic framework and the restriction of flight deck in business jet interaction design, and points out that the contemporary flight deck in business jet interaction design is to be unified at the macro level. The flight deck for some business jet was analyzied. Three core philosophies on the flight deck were focused with examples one by one. This paper states the concrete implementation of interaction design for the top-level design, and provides some references for the new type of the business jet flight deck design.