Abstract: The ultrasonic field of horizontally polarized shear wave radiated by a 2/2 piezoelectric composite normal probe was studied.The strictly analytic field solutions for two different surface forces were deduced and the field distribution and directivity patterns were plotted by numerical calculations.The vertical radiated field of shear wave was obtained theoretically and compared with experiment.The experimental result of directivity pattern conformed the theoretical prediction,which provided the theoretical basis for the engineering application of the transducer