A liquid ejection apparatus including: a liquid-ejection head having ejection openings to eject liquid to record an image on a recording medium; a sealing mechanism configured to selectively establish a sealed state and an unsealed state; a humid-air supply mechanism which supplies a humid air into the ejection space; and a controller, wherein, during the sealed state of the ejection space, the controller controls the humid-air supply mechanism to supply the humid air into the ejection space such that one of a density and a viscosity of the liquid to be ejected from the ejection openings becomes less than a predetermined appropriate value, and then controls the liquid-ejection head such that the liquid having an amount equal to or larger than a set amount is preliminarily ejected prior to the ejection of the liquid onto the recording medium for recording the image on the recording medium, is disclosed.