To make a cup difficult to spill a drink, even if a container is brought down on the bed, and to make even a person weak in sucking power drink a drink and liquid food at his own pace without anxiety by making a cap and the cup closely adhere to each other and fitting elastic valves into air holes on the cap.

A cap 1 with elastic valves 4 in air holes 3 is closely adhered to a cup 2, the cap is made difficult to spill a drink by clogging the air holes 3 by the valves 4, the valves 4 are opened when the drink is sucked from a suction port 6 and the drink is made drinkable. Because the inside of the container is sealed when the elastic valves 4 put in the air holes 3 are not opened by doing in this way, the drink at the inside is made difficult to be split, even if the container is brought down and is turned upside down, the valves 4 are opened only when the drink is sucked from the suction port 6 and the drink is made drinkable. As a result, a burden for a care in which a drink is spilt on the bed and thick bedquilt and a sheet is replaced in hot haste can be reduced and a training for drinking way for a person with aftereffects of cerebral palsy and cerebral apoplexy can be performed.