A liquid discharge head , comprising: a head body comprising a flow channel member that comprises a plurality of discharge holes and a plurality of pressurizing chambers respectively individually connected to the discharge holes , and a piezoelectric actuator substrate that comprises a plurality of individual electrodes to pressurize the pressurizing chambers and is disposed on the flow channel member ; a flexible wiring substrate electrically connected to the individual electrodes and covering the piezoelectric actuator substrate in a plan view; and an adhesive member adhering the flexible wiring substrate and the head body , surrounding all of the individual electrodes in a plan view, and sealing the individual electrodes and portions for electrically connecting the individual electrodes and the flexible wiring substrate , characterized in that when a surface of the head body surrounded by the adhesive member is taken as a first region (E2) and a surface of the head body other than the first region (E2) is taken as a second region (E3) in the plan view, the head body includes a first hole permitting communication between a first opening that opens into the first region (E2) and a second opening that opens into the second region (E3) or opens into a side surface of the head body , and wherein the first hole permits communication between a space (S1) surrounded by the flexible wiring substrate , the adhesive member , and the first region (E2), and an outside other than the space (S1), wherein in a plan view, the first region (E2) includes a third region (E4) including all of the individual electrodes surrounded by the adhesive member , and a fourth region (E5) protruding from the third region (E4), and the first opening is disposed in the fourth region (E5). a head body comprising a flow channel member that comprises a plurality of discharge holes and a plurality of pressurizing chambers respectively individually connected to the discharge holes , and a piezoelectric actuator substrate that comprises a plurality of individual electrodes to pressurize the pressurizing chambers and is disposed on the flow channel member ; a flexible wiring substrate electrically connected to the individual electrodes and covering the piezoelectric actuator substrate in a plan view; and an adhesive member adhering the flexible wiring substrate and the head body , surrounding all of the individual electrodes in a plan view, and sealing the individual electrodes and portions for electrically connecting the individual electrodes and the flexible wiring substrate , characterized in that when a surface of the head body surrounded by the adhesive member is taken as a first region (E2) and a surface of the head body other than the first region (E2) is taken as a second region (E3) in the plan view, the head body includes a first hole permitting communication between a first opening that opens into the first region (E2) and a second opening that opens into the second region (E3) or opens into a side surface of the head body , and wherein the first hole permits communication between a space (S1) surrounded by the flexible wiring substrate , the adhesive member , and the first region (E2), and an outside other than the space (S1), wherein in a plan view, the first region (E2) includes a third region (E4) including all of the individual electrodes surrounded by the adhesive member , and a fourth region (E5) protruding from the third region (E4), and the first opening is disposed in the fourth region (E5). <EOS>