The present invention, which provides, installs utensil in a kind of oral cavity, talked with other people for especially taking notice of halitosis in such public arena be also able to use, the opportunity used, whenever there is no limit can use, and effectively further promote salivary secretion. Installing and installing utensil in the oral cavity of what people in oral cavity to promote salivary secretion includes: main part (1), can detachably install the intraoral a part of what, and the shape at position that its Adjusting Shape is installed at suitable what; And multiple protrusions (2), it is integrally formed what main part (1), and prominent from the surface of main part (1), the top of multiple protrusions (2) is mounted to press intraoral mucous membrane.本發明提供一種口腔內安裝器具,與特別在意口臭的其他人交談中這樣的公共場合也能够使用,使用的時機沒有限制,任何時候都能够使用,並且進一步有效地促進唾液分泌。安裝於人的口腔內來促進唾液分泌的口腔內安裝器具包括:主體部(1),能够裝拆自如地安裝於口腔內的一部分,並且其形狀調整成適合於安裝的部位的形狀;以及多個突起部(2),一體地形成於主體部(1),並從主體部(1)的表面突出,多個突起部(2)的頂端安裝成按壓口腔內的黏膜。