A disclosed inkjet head includes a liquid chamber formed by a space between a vibrating plate and a nozzle substrate and separated by partitions; a piezoelectric element formed by sequentially laminating a common electrode, a piezoelectric substance and an individual electrode over the space; first to fourth insulating films respectively having first to fourth openings; and a first wiring connected to the individual electrode and pulled through the first and second openings over the common electrode, wherein the first wiring passes through the third opening over the third insulating film, the first wiring is exposed from the fourth opening so as to be externally connected, and the third insulating film and the fourth insulating film are not partly formed above the liquid chamber and formed above the first wiring.