PROBLEM TO BE SOLVED: To provide a hydroponics raising seedling equipment intended for lowering cost, saving labor, and simplifying and sophisticating. SOLUTION: This hydroponics raising seedling equipment has such a structure that a hydroponics raising seedling water-retaining mat is made by molding a shallow square pool with a waterproof sheet, putting a water-retaining sponge thereinto followed by covering with a root-preventing sheet, and sewing three or two side rims of the root-preventing sheet on the waterproof sheet, and a seeded raising seedling box is put on the mat. The hydroponics raising seedling equipment is constructed so as to supply a proper amount of water and liquid manure properly stored through a hose in the water-retaining sponge to seedlings through the root-preventing sheet adhering to the bottom of the seeded raising seedling box, and easily raise homogeneous seedlings with excellent root spread at a low cost. COPYRIGHT: (C)2011,JPO&INPIT