To provide a pressure accumulation type delivery container rapidly discharging air bubbles after changing a container.

A suction valve 40 is provided in a valve member, a flow-out hole 32a is formed in a valve member above the suction valve, and a seal part 15 is circumferentially provided on the inner surface of a cylinder member 10 below the valve member. When a piston member 20 slides with respect to the cylinder member 10, the lower end of the valve member 30 is slidably brought into contact with the inner circumference of the seal part 15 to separate the inside of the cylinder member 10 into a pump chamber above the seal part 15 and a communication chamber below the seal part. Further sliding of the piston member 20 allows the valve member 30 to push back the content in the communication chamber into the container. The delivery of the content reduces the pressure in the pump chamber, the valve member 30 is elevated and seated on a valve hole, and at the same time, the suction valve 40 is opened to allow the content in the container sucked in the communication chamber to flow out from the flow-out hole into the pump chamber.

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