A liquid jet head includes a nozzle guard attached to a nozzle plate. The nozzle guard functions as a liquid storage unit and is configured to store residual liquid that attaches to the nozzle plate. Channel lines include ejection and non-ejection channels and a dummy channel incapable of driving. Liquid is supplied into the dummy channel while being brought to a negative pressure. The nozzle plate includes a dummy nozzle hole that communicates with the dummy channel, and the dummy nozzle hole is provided at a position to aspirate stored residual liquid using the nozzle guard.