Aiming at the problem of inaccurate measurement of aero?engine intake flow,this paper investigates a new type of aero?engine flow pipe with a throat structure.Its advantage is that on the one hand, due to the optimization of the flow field by the throat structure, higher intake flow measurement accuracy can be obtained by arranging fewer measuring probes. On the other hand, the static pressure difference between the straight pipe section and the throat is used to obtain the flow in the pipe in a non?contact way, which greatly simplifies the test method of the inlet flow in the test site.The feasibility of the design scheme is verified by simulation and experiment. The research results provide a new solution for the accurate measurement of aero?engine intake flow.