The present invention provides a bodily fluid treating article improved so as to assure that bodily fluids do not leak therefrom particularly when the wearers body weight is exerted thereon or the wearers posture changes, and a wearing article including the same. A bodily fluid treating article 1 is attached to a diaper 2 of a wearing article. A bodyside liner 61 and a backsheet 62 of the diaper 2 are formed with a chassis opening 59 extending therethrough in a thickness direction of them. A liquid-absorbent core 71 of a liquid-absorbent structure 70 is formed with a liquid-guiding opening 74 extending therethrough so as to be centrally aligned with the chassis opening 59. Within the liquid-guiding opening 74, a valve seat member 20 is provided as a component of the bodily fluid treating article 1 so that the outermost peripheral edge 25 of the valve seat member 20 may fit in the liquid-guiding opening 74. The opening 11 of the container 10 is exposed on the side facing the wearers body by the intermediary of the liquid-guiding opening 74 and faces the wearers external genitals.
