A liquid discharge head comprising: a plurality of discharge orifices arranged to discharge liquid; a plurality of recording elements arranged to generate energy used to discharge liquid; a plurality of pressure chambers having therein the recording elements; a plurality of supply channels arranged to supply liquid to the pressure chambers; a common supply channel communicating with the plurality of supply channels and arranged to supply liquid to the plurality of supply channels; a plurality of recovery channels arranged to recover liquid in the pressure chambers; and a common recovery channel communicating with the plurality of recovery channels and arranged to recover liquid from the plurality of recovery channels; wherein the liquid discharge head further comprises a first inlet port arranged to supply liquid from outside of the liquid discharge head to the common supply channel; a first recovery port arranged to recover liquid from the common supply channel to the outside of the liquid discharge head; a second inlet port arranged to supply liquid from outside of the liquid discharge head to the common recovery channel; a second recovery port arranged to recover liquid from the common recovery channel to the outside of the liquid discharge head; a first negative pressure control unit communicating with the common supply channel; and a second negative pressure control unit communicating with the common recovery channel, wherein the first inlet port and the first recovery port communicate with each other by the common supply channel without going through the pressure chambers, and wherein the second inlet port and the second recovery port communicate with each other by the common recovery channel without going through the pressure chambers. a plurality of discharge orifices arranged to discharge liquid; a plurality of recording elements arranged to generate energy used to discharge liquid; a plurality of pressure chambers having therein the recording elements; a plurality of supply channels arranged to supply liquid to the pressure chambers; a common supply channel communicating with the plurality of supply channels and arranged to supply liquid to the plurality of supply channels; a plurality of recovery channels arranged to recover liquid in the pressure chambers; and a common recovery channel communicating with the plurality of recovery channels and arranged to recover liquid from the plurality of recovery channels; wherein the liquid discharge head further comprises a first inlet port arranged to supply liquid from outside of the liquid discharge head to the common supply channel; a first recovery port arranged to recover liquid from the common supply channel to the outside of the liquid discharge head; a second inlet port arranged to supply liquid from outside of the liquid discharge head to the common recovery channel; a second recovery port arranged to recover liquid from the common recovery channel to the outside of the liquid discharge head; a first negative pressure control unit communicating with the common supply channel; and a second negative pressure control unit communicating with the common recovery channel, wherein the first inlet port and the first recovery port communicate with each other by the common supply channel without going through the pressure chambers, and wherein the second inlet port and the second recovery port communicate with each other by the common recovery channel without going through the pressure chambers.