The present disclosure provides an ultrasonic touch device and a display device. The ultrasonic touch device includes a touch layer, having a plurality of probes fixedly disposed on a first side thereof, the plurality of probes being perpendicular to the touch layer; an interlayer disposed on the first side of the touch layer, the plurality of probes penetrating the interlayer and extend from the first side of the touch layer to a second side of the interlayer; a dielectric layer disposed on the second side of the interlayer, and an ultrasonic transceiver disposed at a periphery of the dielectric layer, configured to transmit a detecting ultrasonic wave to the dielectric layer and receive the reflected ultrasonic wave after the detecting ultrasonic wave is reflected.