To provide a manufacturing method for a liquid ejecting head in which a piezoelectric body is prevented from being uneven in thickness, and manufacturing costs can be reduced.

The manufacturing method for the liquid ejecting head comprising the piezoelectric body formed on a diaphragm which constitutes wall faces of a plurality of pressure chambers comprises a filling process of filling a piezoelectric material to a plurality of recesses of a mold substrate where the plurality of recesses are formed to correspond to the plurality of pressure chambers, a layering process of layering a first green sheet to be the diaphragm on the mold substrate in a manner to cover the recesses filled with the piezoelectric material, a first heating process of heating the piezoelectric material filled in the recesses, and a peeling process of peeling the piezoelectric material from the mold substrate.