The drinking receptacle has excellent portability and is free from deposition of dusts on and around the drinking spout. An inner cover 3 applied to the top of a receptacle main body 2 which has heat insulation function and an outer cover 4 applied to the inner cover are sealed from each other with a water-sealing structure. The inner cover 3 has, on its cover plate 31 covering the upper opening of the receptacle main body 2, a drinking spout 34 and an air vent 35.