Embodiments of the present invention relate to a wireless ultrasonic probe and an ultrasonic machine. The wireless ultrasonic probe comprises: a probe body for transmitting and receiving ultrasonic waves; and a heat sink comprising a first end portion and a second end portion, wherein at least a part of the second end portion is disposed within the probe body, and the first end portion is formed in a manner that the second end portion extends to the outside of the probe body. The wireless ultrasonic probe can efficiently dissipate heat generated thereby during charging and discharging operation procedures.