PROBLEM TO BE SOLVED: To provide an ultrasonic probe having a structure that can receive ultrasonic waves with good quality even if application quantity of a medium is reduced.SOLUTION: An ultrasonic probe 2 comprises: a first ultrasonic element 15 and a second ultrasonic element 16 that transmit and receive ultrasonic waves a rotatable sound adjusting part 12 that adjusts acoustic impedances of the first ultrasonic element 15 and the second ultrasonic element 16 and a suction part 18 that changes a force for causing the first ultrasonic element 15, the second ultrasonic element 16, and the sound adjusting part 12 to press each other.COPYRIGHT: (C)2015,JPO&INPIT【課題】媒質の塗布量を減らしても品質良く超音波を受信できる構造の超音波プローブを提供する。【解決手段】超音波プローブ2は、超音波の発信と受信とを行う第1超音波素子15及び第2超音波素子16と、第1超音波素子15及び第2超音波素子16の音響インピーダンスを調整する回転可能な音響調整部12と、第1超音波素子15及び第2超音波素子16と音響調整部12とを互いに押圧させる力を変更する吸引部18と、を備える。【選択図】図2