An absorbent article comprising a first nonwoven fabric and a second nonwoven fabric that sandwich a water-absorbing polymer group, wherein the surface of the first nonwoven fabric on the side of the water-absorbing polymer group has openings, wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the surface of the first nonwoven fabric on the opposite side of the water-absorbing polymer group has openings, wherein the porosity of the openings is 25% or more and 50% or less; wherein the water holding rate of the first nonwoven fabric is 1000 mass% or more, determined according to JIS L 1913 6.9.2; wherein at least one surface of the second nonwoven fabric has openings, wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the water-absorbing polymer constituting the water-absorbing polymer group is particulate; and wherein the particle diameter of the water-absorbing polymer is more than 106 μm and 1000 μm or less, determined as described in the description; wherein the 90% diameter in the diameter distribution refers to the diameter of an opening that is determined by arranging observed openings in order of increasing area of each opening, adding together the areas of the openings, starting with the smallest area, and determining the opening at which the accumulated area is the nearest value to 90% of the total area of the openings, wherein the 10% diameter in the diameter distribution refers to the diameter of an opening that is determined by arranging the areas of the openings in order of increasing area, adding together the areas of the openings, starting with the smallest area, and determining the opening at which the accumulated area is the nearest value to 10% of the total area of the openings, and wherein the 90% diameter, the difference between the 90% diameter and the 10% diameter in the diameter distribution and the porosity of the openings are determined by image analysis of the surface image of the nonwoven fabric obtained by scanning electron microscopy as described in the description. wherein the surface of the first nonwoven fabric on the side of the water-absorbing polymer group has openings, wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the surface of the first nonwoven fabric on the opposite side of the water-absorbing polymer group has openings, wherein the porosity of the openings is 25% or more and 50% or less; wherein the water holding rate of the first nonwoven fabric is 1000 mass% or more, determined according to JIS L 1913 6.9.2; wherein at least one surface of the second nonwoven fabric has openings, wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the 90% diameter in the diameter distribution of the openings is 10 μm or more and 130 μm or less, wherein the difference between the 90% diameter and the 10% diameter in the diameter distribution of the openings is 100 μm or less; wherein the water-absorbing polymer constituting the water-absorbing polymer group is particulate; and wherein the particle diameter of the water-absorbing polymer is more than 106 μm and 1000 μm or less, determined as described in the description; wherein the 90% diameter in the diameter distribution refers to the diameter of an opening that is determined by arranging observed openings in order of increasing area of each opening, adding together the areas of the openings, starting with the smallest area, and determining the opening at which the accumulated area is the nearest value to 90% of the total area of the openings, wherein the 10% diameter in the diameter distribution refers to the diameter of an opening that is determined by arranging the areas of the openings in order of increasing area, adding together the areas of the openings, starting with the smallest area, and determining the opening at which the accumulated area is the nearest value to 10% of the total area of the openings, and wherein the 90% diameter, the difference between the 90% diameter and the 10% diameter in the diameter distribution and the porosity of the openings are determined by image analysis of the surface image of the nonwoven fabric obtained by scanning electron microscopy as described in the description.