With the the sound wave transmitted by transducer and reflection wave form the standing wave, and glass beads obtained a radiation force from the standing wave, there was a distribution of standing wave fringes formed by glass beads on the bottom of water tank. Through adjusting the distance between transducer and reflector, there was a obvious fringes distribution of sound field enhanced by standing wave in the water. Then, we can confirm the transducer sound field by the fringes distribution of glass beads.