The invention provides an element substrate and a liquid ejection head. The element substrate of the liquid ejecting head includes: a substrate; an insulating film on the substrate; a heating resistor element for generating thermal energy for discharging the liquid; a protective film for covering the heating resistor element; a first electrical wiring layer disposed in the insulating film and used for supplying current to the heating resistor element; a second electrical wiring layer disposed in a different layer of the insulating film from the first electrical wiring layer and for supplying current to the heating resistor element; at least one connecting member extending within the insulating film to connect the first electrical wiring layer to the heating resistor element for driving the current to flow in the first direction, the heating resistor element including a connection area extending along a second direction intersecting the first direction.