UN aid chief Tom Fletcher says people in Gaza must regain their dignity, warning that current aid levels are only the bare minimum of what international law requires.

People living in Gaza deserve to regain their "dignity" rather than merely survive, the UN aid chief said Thursday, as he criticised Israeli obstructions to the distribution of humanitarian assistance.

Tom Fletcher, addressing the United Nations Security Council, acknowledged the flow of aid has improved since a ceasefire between Israel and Hamas took effect on October 10 - with an average of 100 deliveries entering the Palestinian territory each day.

But, he said, "these fragile gains are the bare minimum of what Palestinians need and what we can provide - and what international law demands."

"We cannot allow the summit of our ambition and our will to be a world where children have sufficient calories to survive and are spared constant bombing, yet remain hungry, bitten by rats, homeless and out of school," Fletcher added.