Abstract: A spout (2) of a bottle (1) is provided on the inner side thereof with a partition (3) for dividing the space inside the spout into a liquid effluent part (5) and an air influent part (6). The partition is connected to and integrated with the spout. The space inside the spout divided by the partition is opened in the opening face of the spout toward the outer direction on both the liquid effluent part side and the air influent part side. The partition on the air influent part side is directed toward the interior of the bottle and continued to the inner wall of the spout and closed in the form of a bag. The partition is provided on the trailing part thereof with an air hole (4) connecting the air influent part and the interior of the bottle. When a person applies his lips to the liquid effluent part and tilts the bottle so as to lower the liquid effluent part, the drinking water in the bottle flows into his mouth through the liquid effluent part.