PROBLEM TO BE SOLVED: To provide absorptive resin composition particles having excellent effect of absorbing aqueous liquid, particularly blood.SOLUTION: There are provided absorptive resin composition particles that contain a polymer (A) containing a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) converted into the water-soluble vinyl monomer (a1) by hydrolysis as essential constitutional units, and a polyvalent hydroxyl group-containing compound (B) having a solubility parameter of 7.0-19.0 (cal/cm)and viscosity at 25°C of 20-8,000 mPa s, and contains 1.0-20 wt.% of the polyvalent hydroxyl group-containing compound (B) based on the weight of the polymer (A); and a production method including a step of crosslinking the surface of the polymer (A) with a surface crosslinking agent (d), and then a step of mixing the polyvalent hydroxyl group-containing compound (B) therewith.SELECTED DRAWING: None【課題】水性液体、特に血液の吸収効果に優れた吸収性樹脂組成物粒子を提供する。【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)を必須構成単位とする重合体(A)と、溶解度パラメーターが7.0~19.0(cal/cm3)1/2であり、かつ、25℃における粘度が20~8000mPa・sである多価水酸基含有化合物(B)とを含む吸収性樹脂組成物粒子であり、多価水酸基含有化合物(B)が重合体(A)の重量に基づいて1.0~20重量%含有する吸収性樹脂組成物粒子;前記重合体(A)の表面を表面架橋剤(d)により架橋する工程後に、多価水酸基含有化合物(B)を混合する工程を含む製造方法。【選択図】 なし