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 and a surface of the head body other than the first region is taken as a second region in the plan view, the head body includes a first hole (7, 107) permitting communication between a first opening (7a, 107a) that opens into the first region and a second opening (7b, 107b) that opens into the second region or opens into a side surface of the head body, and wherein the first hole (7, 107) permits communication between a space surrounded by the flexible wiring substrate, the adhesive member, and the first region, and an outside other than the space, wherein in a plan view, the first region includes a third region including all of the individual electrodes surrounded by the adhesive member, and a fourth region protruding from the third region, and the first opening (7a, 107a) is disposed in the fourth region. 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 and a surface of the head body other than the first region is taken as a second region in the plan view, the head body includes a first hole (7, 107) permitting communication between a first opening (7a, 107a) that opens into the first region and a second opening (7b, 107b) that opens into the second region or opens into a side surface of the head body, and wherein the first hole (7, 107) permits communication between a space surrounded by the flexible wiring substrate, the adhesive member, and the first region, and an outside other than the space, wherein in a plan view, the first region includes a third region including all of the individual electrodes surrounded by the adhesive member, and a fourth region protruding from the third region, and the first opening (7a, 107a) is disposed in the fourth region.