An ultrasonic probe coupling assembly (1) and an ultrasonic probe mechanism. The ultrasonic probe coupling assembly (1) comprises a probe clamping sleeve (11) and a solid-state coupling member (12), the probe clamping sleeve (11) is configured to be sleeved on an ultrasonic probe (2)； and the solid-state coupling member (12) is fixed in the probe clamping sleeve (11), with one side being located in the probe clamping sleeve (11) to be attached to the ultrasonic probe (2), and the other side protruding from the probe clamping sleeve (11) for contact with the skin. The ultrasonic probe mechanism comprises the ultrasonic probe coupling assembly (1) and an ultrasonic probe (2). By pushing the ultrasonic probe (2), the end portion of the ultrasonic probe (2) is attached to the solid-state coupling member (12) located at the inner side of the probe clamping sleeve (11), so that seamless transition is realized between the ultrasonic probe (2) and the skin, air between the ultrasonic probe (2) and the skin is eliminated, and stable and effective transmission of the ultrasonic waves is ensured, there is no need to use a gel coupling agent, and the solid-state coupling member (12) used is capable of forming a good fit with the ultrasonic probe (2).
