PROBLEM TO BE SOLVED: To provide an absorbent article for preventing the outside and the periphery of the absorbent article from getting wet due to the dew condensation of moisture coming out of the inside of the absorbent article.SOLUTION: An absorbent article 1 includes an absorbent body 2 and an armoring sheet material 11 on the outer surface side of the absorbent body. The armoring sheet material uses a sheet with high air permeability and low moisture permeability, whose air permeability resistance is 240 (seconds/100 cc) or less, and moisture vapor transmission rate is 3400 (g/m24Hr) or less.