To provide a manufacturing method for a liquid jet head capable of preventing defective ejection such as clogging in a nozzle.

This liquid jet head comprises a fluid passage forming substrate 10 having a pressure generating chamber 12 communicating with a nozzle opening formed thereon, and a piezoelectric element 300 which consists of a lower electrode 60, a piezoelectric body layer 70, and an upper electrode 80, and is provided on one face side of the fluid passage forming substrate 10 with a diaphragm therebetween. This method of manufacturing the liquid jet head comprises a process for forming the diaphragm and the piezoelectric element 300 on one face side of the fluid passage substrate 10, a process for forming the pressure generating chamber 12 by patterning the fluid passage forming substrate 10 from the other face side and forming a communication section communicating with one end of the pressure generating chamber 12 in the longitudinal direction, and a process for forming a through-hole section 110 for supplying a liquid to the communication section 13 by radiating a laser light 130 to a region of the diaphragm opposite to the communication section 13 in a condition that an air flow 120 is generated along an opening face where a region of the diaphragm in an assembly having at least the fluid passage forming substrate 10 opposite to the communication section 13 is opened.