The invention discloses an ultrasonic wind speed measurement device simple in structure. The ultrasonic wind speed measurement device simple in structure comprises a main control module, a display module, a power supply, a data downloading module, an ultrasonic sending module and an ultrasonic receiving module; the input end of the main control module is electrically connected with the power supply and the data downloading module; and the output end of the main control module is electrically connected with the display module, the ultrasonic sending module and the ultrasonic receiving module respectively. The main control module in the invention controls the ultrasonic sending module to send ultrasonic wave for many times, and receive ultrasonic wave for many times through the ultrasonic receiving module; then, the main control module performs calculation, so that the magnitude and the direction of the current wind speed are obtained; data is displayed through the display module; and the ultrasonic wind speed measurement device simple in structure has the advantages of being simple in structure, simple and convenient to operate, high in measurement precision and the like.