Provided is a portable ultrasonic apparatus, comprising a portable host (20), wherein the portable host (20) comprises a housing (21), a board card assembly and a first battery, the board card assembly and the first battery being accommodated inside the housing (21), and the first battery being connected to the board card assembly； and a battery pack (10), wherein the battery pack (10) comprises a pack housing (11), a circuit board assembly and a second battery, the circuit board assembly and the second battery being accommodated inside the pack housing (11), and the second battery being connected to the circuit board assembly. The battery pack (10) is provided with a first charging terminal (12), and the first charging terminal (12) is connected to the circuit board assembly； the portable host (20) is provided with a second charging terminal (22), and the second charging terminal (22) is connected to the first battery； and the first charging terminal (12) of the battery pack (10) is used for being detachably connected to the second charging terminal (22) of the portable host (20). The portable host (20) is equipped with the battery pack (10) in an extending manner, and therefore, the battery pack (10) can increase the battery life of the portable host (20)； and the battery pack (10) is detachably connected to the portable host (20), thereby facilitating the carrying of the portable host (20), such that the use of the portable host (20) is more flexible, and the usage requirements of more scenarios are met.L'invention concerne un appareil ultrasonore portable, comprenant un hôte portable (20), l'hôte portable (20) comprenant un boîtier (21), un ensemble carte à puce et une première batterie, l'ensemble carte à puce et la première batterie étant logés à l'intérieur du boîtier (21), et la première batterie étant connectée à l'ensemble carte à puce ； et un bloc-batterie (10), le bloc-batterie (10) comprenant un boîtier de bloc (11), un ensemble carte de circuit imprimé
