In the process of wind tunnel test of aircraft,it is necessary to dynamically detect many parameters of aircraft surface.The traditional monitoring system faces a series of problems,such as the destruction of wing shape structure, insufficient monitoring parameters and monitoring range.Aiming at these problems,this paper designs a multi- parameter integrated flexible sensor array on wing surface ,and puts forward an distinguishing method of velocity and direction based on two-dimensional cubic spline interpolation.The system can simultaneously collect wind speed,wind direction,temperature,pressure,strain,and can display the distribution of the corresponding monitored physical parameters on the wing surface in real time.Experiments with variable wind speed,variable angle of attack and variable sideslip angle are carried out in NH-2 wind tunnel.The experimental results show that the angle identification resolution of the system can reach 2°,which further verifies the feasibility and effectiveness of the system designed and provides data support for analyzing the aerodynamic characteristics of the aircraft surface.