An inside plug (10) includes: an inside plug body (12) held at an opening; a liquid absorbent wick holding section (17); and a ring (18) which (i) is held by the liquid absorbent wick holding section (17), (ii) is located in an inner space of a container body (2) in a state where the inside plug body (12) is held at the opening, and (iii) is brought closer to a flat surface (15) by gravity in a case where a suction-type liquid container (1) has fallen sideways.