PURPOSE: To reduce a temperature change in a heated or cooled drink by providing a shape where an upper end surface of a cylindrical cover is blocked up and a lower end surface is opened, and making a lower part larger than an upper part in a vertical cross section.

CONSTITUTION: Cross sections of respective parts of a drink heat-cold insulation cover 1 are a circular shape. Since the thin plate is molded and formed by using a high polymer material as a construction material, a thickness 4 is almost uniform over the respective parts. A lower end part of the drink heat-cold insulation cover 1 is a merely notched shape, and a lower part diameter 5b is larger than an upper part diameter 5a in a neck part, and a lower part diameter 6b is larger than an upper part diameter 6a in a barrel part, respectively. Since drink heat-cold insulation covers can be superposed several times over on each other, capacity can be reduced, so that many places are not necessary for custody. Since air between a beer bottle and the drink heat-cold insulation cover 1 and the outside air do not come in contact directly with each other, cooled beer delays speed to raise the temperature. Even in a beer bottle capped condition or even in an uncapped condition, the same cover can be used.