The present invention water-absorbing agent which is excellent in balance between centrifugal retention capacity (CRC) and saline flow conductivity (SFC), and to provide a method of manufacturing a water absorbing agent. The apparatus includes a water-absorbent resin (the A), by the method for producing a water absorbing agent are mixed with the polymer (B) is a polyamine-based polymer having a hydroxyl group in the main chain, a water absorbing resin (the A), the hydroxyl group obtaining a water-absorbing agent containing the polymer (B) is a polyamine-based polymer having in the main chain. .BACKGROUND【課題】遠心分離機保持容量(CRC)と食塩水流れ誘導性(SFC)のバランスに優れる吸水剤、および吸水剤の製造方法を提供する。【解決手段】吸水性樹脂(A)と、ヒドロキシル基を主鎖に有するポリアミン系ポリマーであるポリマー(B)とを混合する吸水剤の製造方法により、吸水性樹脂(A)と、ヒドロキシル基を主鎖に有するポリアミン系ポリマーであるポリマー(B)とを含む吸水剤を得る。【選択図】なし
