The accurate measurement of air data is critical to the navigation and flight control of vehicles. Comparing with the intrusive conventional air data measurement system, the flush air data sensing system could be applied to hypersonic vehicles, stealth vehicles and high angle of attacks vehicles. Based on the development of the flush air data sensing system, different pressure ports arrangements were presented in this paper. And then, advantages and disadvantages of different aerodynamic models and solution algorithms were analyzed. Finally, the failure detection and management of the measure system was summarized.