The inspection result is distinction possible clearly vivid, by at the same time color development uniformly, in after the using, the water absorption treatment material which possesses with the enveloping layer section canning the granular core part and the aforementioned granular core part is offered.Solutions The enveloping layer section was formed, 90 weight % or 96 weight % from the backing material and 10 weight % or 4 weight % the excretory thing inspection converted timber charge which are, aforementioned excretory thing inspection converted timber charge weight % of surface coverage 20 was above, the indicator for excretion thing inspection which is adsorbed into the aforementioned micropore of the porous adsorbent and the aforementioned porous adsorbent which possess the micropore was included, the addition tonnage of the indicator for aforementioned excretion thing inspection 0.1 weight % exceeded vis-a-vis the entire tonnage of the enveloping layer section, 1.0 weight % made the water absorption treatment material which features that it is inside the range below.< Choice figure > Drawing 1鮮やか、かつ均一に発色することにより、使用後において検査結果が明確に判別可能である、粒状芯部と前記粒状芯部を被覆する被覆層部とを有する吸水処理材を提供する。【解決手段】 被覆層部は、90重量%乃至96重量%である基材と、10重量%乃至4重量%の排泄物検査用材料とから構成されており、前記排泄物検査用材料は、吸着率20重量%以上であり、微細孔を有する多孔質吸着剤と、前記多孔質吸着剤の前記微細孔に吸着されている排泄物検査用指示薬を含み、前記排泄物検査用指示薬の添加量は、被覆層部の全体量に対して、0.1重量%を超え1.0重量%以下の範囲内であることを特徴とする吸水処理材とした。【選択図】 図1