涎石形成的病因众多,但还不够十分明确,其中以异物误入导管,影响唾液流速,同时唾液中含有无机物质,易以异物为核心而堆积形成涎石。特别是颌下腺导管开口较大,且位于口底部,异物更易误入,涎石形成的机会较其他唾液腺为多。但异物与涎石同时出现,在临床上不多见。今将我科最近所见颌下腺导管异物(鱼刺)合并涎石形成1例,报道如下: There are many causes for the formation of salivary stone, but it is not yet quite clear. Among them, foreign bodies invade into the duct and affect the saliva flow rate. At the same time saliva contains inorganic substances, which easily form foreign bodies as the core and form salivary rocks. In particular, submandibular gland duct openings larger, and located at the bottom of the mouth, foreign body more easily inadvertently, salivary glands formed more opportunities than other salivary glands. However, foreign body and salivary stone appear at the same time, rare in clinical practice. In our department recently found submandibular gland duct foreign body (fish thorn) merged saliva formation in 1 case, reported as follows: