The present invention discloses an atomized liquid storage device, including a container used for storing atomized liquid, where the container is axially provided with a penetrating through hole, an inner wall of the through hole is provided with a liquid outlet hole communicating with an inner part of the container, the through hole is further internally provided with a sealing structure slidable up and down, and the sealing structure seals the liquid outlet hole and is set to allow air in the through hole to pass through. An atomizer is further disclosed, including the atomized liquid storage device and an atomization device. The atomized liquid storage device of the present invention has advantages of a simple structure and good sealing performance, and the atomizer of the present invention has advantages of being convenient and efficient in use and replacement of an atomized liquid storage device.
