A liquid ejection device includes a plurality of nozzles, a plurality of piezoelectric elements, a drive signal generating portion and a common ejection testing portion. The nozzles are arranged to eject a liquid. The piezoelectric elements are provided in respective correspondence to the nozzles. The drive signal generating portion is arranged to generate a drive signal which repeats for each ejection cycle in which the nozzles eject the liquid onto a pixel, the drive signal having a testing period within each ejection cycle. The common ejection testing portion is provided in common to the nozzles. One of the piezoelectric elements corresponding to the nozzle to be tested is driven within a given ejection cycle of the drive signal, whereupon the nozzle to be tested is tested by the common ejection testing portion during the testing period of the same given ejection cycle.