<p>In order to dissipate to a high degree of efficiency the heat of a liquid discharge substrate of an ink jet recording head and effectively suppress increases in the substrate temperature, this invention provides an ink jet recording head in which a liquid discharge substrate (2) is mounted on a supporting member (1) through a foil-shaped heat dissipation member (31), in which the area of the heat dissipation member (31) is greater than the projected area of the liquid discharge substrate with respect to the supporting member (1).</p>
