Abstract: A drinking bottle includes a bottle body, a cap mounted threadably on an upper end portion of the bottle body, and a flexible liquid-sucking member that has a horizontal disk clamped between the upper end portion of the bottle body and an annular plate of the cap in such a manner that a liquid-tight seal is established between the cap and the liquid-sucking member and between the liquid-sucking member and the bottle body. The liquid-sucking member has a suction tube that is formed on a top surface of the disk and that extends through an eccentric hole formed in the annular plate of the cap, and a through hole that extends through the disk and the suction tube and that is in fluid communication with an upper end opening in the bottle body. The suction tube has a distal outer end portion that is provided with a liquid-controlling valve to permit outflow of liquid from the outer end portion when the latter is sucked.