Abstract: There is disclosed a cut flowers display water tank capable of prolonging the lives of the cut flowers. The cut flowers display water tanks includes water tanks and a pipe system for circulating water in the water tanks via a filter, a circulating pump and a cooler, the cooler having a coolant therein for cooling water. The cut flowers display water tank further includes a freezer for cooling the coolant in the cooler and pots removably attached to the water tanks and having slits through which the cut flowers are inserted into the water tanks.