PROBLEM TO BE SOLVED: To provide an ultrasonic ejection device capable of conducting ultrasonic waves to the brain even while a person is moving.SOLUTION: An ultrasonic ejection device 1 comprises: an ultrasonic ejection part 2 which ejects ultrasonic waves; a driving part 3 which drives the ultrasonic ejection part 2; and a support part 4 which supports the ultrasonic ejection part 2 and the driving part 3a and is installed at a human body. The ultrasonic ejection part 2 has a shape to be installed in an external acoustic meatus of the human body, and the support part 4 has a shape to be installed at an ear capsule of the human body. The ultrasonic ejection part 2 has a via hole 6 for transmitting a sound to an ear drum of the human body.SELECTED DRAWING: Figure 1【課題】人が移動しているときにも脳に超音波を伝導できる超音波射出装置を提供する。【解決手段】超音波射出装置1は超音波を射出する超音波射出部2と、超音波射出部2を駆動する駆動部3と、超音波射出部2及び駆動部3を支持し人体に設置する支持部4と、を備え、超音波射出部2は人体の外耳道に設置される形状であり、支持部4は人体の耳殻に設置される形状である。超音波射出部2には人体の鼓膜に音を伝送する貫通孔6が設置されている。【選択図】図1