PROBLEM TO BE SOLVED: To provide a water-absorbing block easy to handle without damaging water absorbency. SOLUTION: This water-absorbing block is formed by binding ceramic sintered particles, using a hydraulic inorganic material as a binder, for instance, cement such as regular portland cement, high-early-strength portland cement, alumina cement, blast slag cement, silica cement, and fly ash cement, and blast slag, quick lime, hydrated lime, and plaster, and forming the product in a block-like form. COPYRIGHT: (C)2009,JPO&INPIT