PURPOSE: To provide a washing machine tray which eliminates the need for blowing air at the time of use and obviates the leakage of the accumulated water even if part of a cylinder is broken.

CONSTITUTION: This washing machine tray is composed of a thick vinyl sheet 2 having a size to allow the placement of a washing machine 6 and a weir member 3 for preventing the emission of the water accumulated by dropping from the washing machine 6 outside the sheet 2. This weir member 3 is formed by packing sponge 5 having a rectangular shape in section into the cylinder 4 made of vinyl resin. This sponge 5 is molded by continuous foaming. The rear surface of the cylinder 4 is fused to the front surface side of the peripheral edge of the sheet 2 to prevent the leakage of the water therefrom and further, the outer peripheral surface of the cylinder 4 is board with plural air holes 6 into and out of which air passes.