To provide absorbing resin particles which have such a rate pattern that an absorption rate is low in an initial period, is intermediate in a middle period, and is high in a latter period, and have high liquid-permeability of a swollen gel, and an absorbing article which prevents a problem such as rash even in a thin disposal diaper.SOLUTION: Absorbing resin particles contain a crosslinked polymer (A) of a monomer composition containing a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) to become the water-soluble vinyl monomer (a1) by hydrolysis, and an internal crosslinking agent (b), in Demand Wettability test method, a ratio (t2/t1) of a time (t1) when an absorption amount to physiological saline per 1 g of absorbing resin particles reaches 2 g to a time (t2) when the absorption amount reaches 20 g is 2-20, and a gel bed transmission rate at 0 psi swelling pressure is 40 darcies or more.SELECTED DRAWING: None【課題】吸収速度が初期遅く、中期普通、後期速いという速度パターンであり、かつ膨潤ゲルの通液性が高い吸収性樹脂粒子、及び、薄型紙おむつにおいてもカブレ等の問題を生じない吸収性物品を提供する。【解決手段】水溶性ビニルモノマー（ａ１）及び／又は加水分解により水溶性ビニルモノマー（ａ１）となるビニルモノマー（ａ２）並びに内部架橋剤（ｂ）を含む単量体組成物の架橋重合体（Ａ）を含む吸収性樹脂粒子であってＤｅｍａｎｄ Ｗｅｔｔａｂｉｌｉｔｙ試験法において、吸収性樹脂粒子１ｇ当たりの生理食塩水に対する吸収量が２ｇに達するまでの時間（ｔ１）と、吸収量が２０ｇに達するまで時間（ｔ２）の比（ｔ２／ｔ１）が２～２０であり、０ｐｓｉ膨潤圧力でのゲルベッド透過率が４０ｄａｒｃｉｅｓ以上である、吸収性樹脂粒子。【選択図】なし
