[Object] It is an object of the present invention to provide a liquid medicine supply device configured to reliably prevent infants and children from accidentally opening the liquid medicine supply device.[Solutions] A liquid medicine supply device (1) including a container (10) with a containing portion (11) and a mouth (16)； an interior cap (30)； and an exterior cap (60), in which the interior and exterior caps (30, 60) include a ratchet mechanism (50, 80). The ratchet mechanism allows the exterior and interior caps (60, 30) to be integrally rotated when the exterior cap is rotated relative to the mouth under a condition of the exterior cap (60) pressed against the interior cap whereas the ratchet mechanism allows the exterior cap (60) to be rotated relative to the interior cap (30) when the exterior cap is rotated relative to the mouth under a condition of the exterior cap (60) which is not pressed against the interior cap. An axial direction of the mouth (16) is inclined from an axial direction of the containing portion (11) at a predetermined angle (θ).
