An inkjet head ( 1 ) includes: a substrate ( 2 ); a liquid passage section ( 3 ) formed on a surface of the substrate ( 2 ) to provide a passage for ink; and an eject section ( 5 ), which is a part of the liquid passage section ( 3 ), including an ejection opening ( 51 ) through which ink is ejected. At least the part of the eject section ( 5 ) which makes up the ejection opening ( 51 ) protrudes from an end of the substrate ( 2 ). Of the internal angles of a cross-section substantially perpendicular to a direction in which the protruding eject section ( 5 ) protrudes or a cross-section substantially parallel to the direction, all those internal angles, alpha to delta, which are formed by the external surfaces of the eject section ( 5 ) are greater than 20 DEG. Thereby, it is possible to provide an inkjet head have good eject stability. |