To solve the problems of insufficient noise suppression ability and poor stability caused by the influence of environmental temperature and humidity, etc, a three-array ultrasonic wind measurement method based on the quadratic correlation algorithm is proposed. Firstly, a three-array wind measurement structure is designed by combining the principle of ultrasonic wind measurement, which consists of three transmitting and receiving integrated ultrasonic sensors. Secondly, a method for measuring ultrasonic propagation time based on quadratic correlation is given according to the structure of the system, which can effectively improve the accuracy of wind speed and direction measurement by using stronger performance of the quadratic correlation algorithm for noise suppression. It is theoretically explained that the proposed wind measurement method is not affected by the propagation speed of the ultrasonic wave itself ( i. e. , the environmental temperature and humidity). Finally, the effectiveness of the proposed method is verified by simulation experiments and a real measurement system is established. The practical test shows that the maximum relative error of wind speed measurement is 2. 0% , and the maximum error of wind direction angle measurement is 2. 1°. Results basically meet the accuracy requirements of ultrasonic wind speed and direction measurement.