Disclosed are an ultrasound apparatus and a couplant heating device (20), the ultrasound apparatus comprising a host machine (10) and a couplant heating device (20). The host machine (10) is provided with a heat dissipation hole (11), the couplant heating device (20) comprises a heat conducting tube (21) and a heat transfer seat (22), one end of the heat conducting tube (21) is coupled to the heat dissipation hole (11) on the host machine (10) or is arranged relative to and spaced apart from the heat dissipation hole, the other end of the heat conducting tube (21) is connected to the heat transfer seat (22), a heat transfer hole in communication with the heat conducting tube (21) is provided on the heat transfer seat (22), and a couplant box (23) for accommodating a couplant is provided on the heat transfer seat (22). Because the couplant heating device (20) is connected to the host machine (10), the thermal energy generated by the host machine (10) is transferred to the couplant box (23) for heating. By virtue of utilizing the internal thermal energy of the host machine (10) to heat the couplant, without requiring an additional heating element and energy input, energy recovery and utilization is achieved, and the cost of the apparatus is reduced.La présente invention concerne un appareil à ultrasons et un dispositif de chauffage de milieu de couplage (20), l'appareil à ultrasons comprenant une machine hôte (10) et un dispositif de chauffage de milieu de couplage (20). La machine hôte (10) est munie d'un trou de dissipation thermique (11), le dispositif de chauffage de milieu de couplage (20) comprend un tube de conduction de chaleur (21) et un siège de transfert de chaleur (22), une extrémité du tube de conduction de chaleur (21) est accouplée au trou de dissipation thermique (11) sur la machine hôte (10) ou est disposée par rapport au trou de dissipation thermique et espacée de celui-ci, l'autre extrémité du tube de conduction de chaleur (21) est reliée au siège d
