A particulate water absorbing agent containing a water absorbing resin as a main component, the water absorbing resin being a polyacrylic acid (salt) crosslinked polymer, said particulate water absorbing agent comprising a polyvalent metal and satisfying the following requirements to : a polyvalent metal cation is contained in an amount between 0.001 wt% and 5 wt% relative to the amount of the particulate water absorbing agent; an absorbency without pressure (CRC) of the particulate water absorbing agent is not less than 28 (g/g) and an absorbency against pressure (AAP 4.83 kPa) of the particulate water absorbing agent is not less than 10 (g/g); the absorbency against pressure and the absorbency without pressure satisfy the inequality: 77 ≤ Absorbency against pressure (AAP 4.83 kPa) + 1.8 × Absorbency without pressure (CRC) ≤ 100; a moisture content of the particulate water absorbing agent is between 5 wt% and 20 wt%; and a vertical diffusion absorbency under pressure (VDAUP) is not less than 15 g, wherein the vertical diffusion absorbency under pressure (VDAUP) is measured in in accordance with the following method: 10.000 g of particulate water absorbing agent is placed in a measuring apparatus, and the total weight W4 [g] of the measuring apparatus is measured; a 0.9 wt% solution of sodium chloride is allowed to be absorbed into the particulate water absorbing agent under a pressure of 4.83 kPa; after 1 hour, the total weight W5 [g] of the measuring apparatus is measured and the VDAUP is calculated according to the following equation VDAUP g = W 5 − W 4 . a polyvalent metal cation is contained in an amount between 0.001 wt% and 5 wt% relative to the amount of the particulate water absorbing agent; an absorbency without pressure (CRC) of the particulate water absorbing agent is not less than 28 (g/g) and an absorbency against pressure (AAP 4.83 kPa) of the particulate water absorbing agent is not less than 10 (g/g); the absorbency against pressure and the absorbency without pressure satisfy the inequality: 77 ≤ Absorbency against pressure (AAP 4.83 kPa) + 1.8 × Absorbency without pressure (CRC) ≤ 100; a moisture content of the particulate water absorbing agent is between 5 wt% and 20 wt%; and a vertical diffusion absorbency under pressure (VDAUP) is not less than 15 g, wherein the vertical diffusion absorbency under pressure (VDAUP) is measured in in accordance with the following method: 10.000 g of particulate water absorbing agent is placed in a measuring apparatus, and the total weight W4 [g] of the measuring apparatus is measured; a 0.9 wt% solution of sodium chloride is allowed to be absorbed into the particulate water absorbing agent under a pressure of 4.83 kPa; after 1 hour, the total weight W5 [g] of the measuring apparatus is measured and the VDAUP is calculated according to the following equation VDAUP g = W 5 − W 4 . wherein the vertical diffusion absorbency under pressure (VDAUP) is measured in in accordance with the following method: 10.000 g of particulate water absorbing agent is placed in a measuring apparatus, and the total weight W4 [g] of the measuring apparatus is measured; a 0.9 wt% solution of sodium chloride is allowed to be absorbed into the particulate water absorbing agent under a pressure of 4.83 kPa; after 1 hour, the total weight W5 [g] of the measuring apparatus is measured and the VDAUP is calculated according to the following equation VDAUP g = W 5 − W 4 . <EOS>