Abstract: A wind speed sensor based on the principle of pitot tube is designed. This paper mainly focuses on the method of measuring wind speed by the principle of pitot tube. Through the acquisition of wind pressure, the small signal is transformed into an electrical signal that can be extracted by amplifying and removing noise. Combined with the wind speed and wind pressure conversion model, the wind velocity measurement data is obtained and transmitted through the communication interface. The electric circuit is consistent with the stability of the essential safety design work, and anti-electromagnetic interference ability is stronger.