A liquid ejection device ejecting a liquid includes: an ejection tube that has an ejection port ejecting the liquid； an actuator that communicates with the ejection tube and applies pulsation to the liquid that is flowed into and then supplies the liquid to the ejection tube； a casing that includes the ejection tube and accommodates the actuator on an inside thereof； a suction channel that is provided in the casing and is capable of sucking the liquid around the ejection port； and a suction adjustment mechanism that has an operation section for adjusting a degree of the suction of the suction channel, in which the operation section is provided in a position near the ejection port from the actuator of the casing.
