A liquid ejection head including: a flow channel unit including a nozzle plate, and a flow-channel-containing substrate (FCC), the nozzle plate and the FCC being laminated, a head case formed with a common liquid flow channel configured to supply the liquid to the reservoir and joined to the FCC on the side opposite from the nozzle plate; a heater configured to heat the nozzle plate; a head cover heated by the heater and formed with a bottom surface portion opposing the nozzle plate on the side opposite from the head case, wherein a distal end of the head cover comes into abutment with a portion between an area of the nozzle plate corresponding to the reservoir and an area formed with the nozzle row, and a void is formed between the area of the nozzle plate corresponding to the reservoir and the head cover.