PURPOSE: To obtain an excellent foam jet container eliminating a need for using a ball valve body to reduce the number of members in this part, facilitating an incorporating operation, preventing intrusion of liquid into an air cylinder as much as possible, and preventing occurrence of a failure in operation of a pump.

CONSTITUTION: A valve body 31 of a special shape is used for omitting ball valve bodies of a delivery valve and a suction valve. A partition wall 24 moving up and down in a large-diameter cylinder 14 is provided for partitioning a part below as an air pressurizing chamber A. The inner peripheral edge of the partition wall 24 is loosely fitted in a recessed groove 34 peripherally formed on the outer periphery of a stem 23. When a vertically movable member 8 is pressed down, the upper wall surface of the recessed groove 34 comes into pressure contact with the top surface of the inner peripheral part of the partition wall 24 to airtightly isolate the inside of the air pressurizing chamber A from the outside.