Disclosed is an oral care instrument which can maintain a sufficient support strength of a long neck, leaves little residue of a medicant after using, has a low contamination risk from nozzle tip, allows smooth spouting of a medical solution from the beginning, prevents excessive supply of a gelatinous or creamy oral-care composition in the case of flowing the composition in a supply channel inside the same, and contributes to the maintenance of the durability of a manufacturing mold. In the aforesaid oral care instrument which comprises a handle (2), a head (3) and a neck (4), a channel (11) for supplying oral-care composition running within the neck (4) to a nozzle (10) of the head (3) via the handle (2) is formed and the head (3) is connected in a detachable manner to the neck (4). On the inner peripheral wall of the neck (4), multiple ribs (41) projecting in the axial center direction and extending along the axial direction are formed. A tubular member (5) constituting the aforesaid channel (11) for supplying oral-care composition is inserted into the neck (4) so that the outer peripheral face (50) thereof is supported by these ribs (41).