To provide an underpants type absorbent article comprising a leakage prevention wall part which hardly causes discomfort felt by a wearer on a hip part.SOLUTION: An underpants type absorbent article (1) comprises an absorbent core (11) and a pair of leakage prevention wall parts (40), and further comprises an absorbent body (1) folded in a cross direction on a lower end of a vertical direction and an exterior member (20). The absorbent body (10) has a front side part (10FR) and a rear side part (10BR), the front side part (10FR) and rear side part (10BR) have an end part fixing part (81, 82) for fixing a pair of leakage prevention wall parts (40) so as not to erect on an upper end part thereof in a vertical direction and on outside of the absorbent core (11) in a lateral direction, the front side part (10FR) has a front junction (71) which joints the pair of leakage prevention wall parts (40) and the exterior member (20) on an upper end, the rear side part (10BR) has a rear junction (72) for jointing the pair of leakage prevention wall parts (40) and exterior member (20) on the upper end part, and an intermediate junction (73) for jointing the pair of leakage prevention wall parts (40) and exterior member (20) between upper and lower ends.SELECTED DRAWING: Figure 5【課題】臀部において、着用者に不快感を生じさせにくい防漏壁部を備えたパンツ型吸収性物品を提供する。【解決手段】吸収性コア（１１）と、一対の防漏壁部（４０）とを備え、上下方向の下端部にて前後に折り曲げられた吸収性本体（１）と、外装部材（２０）と、を有するパンツ型吸収性物品（１）であって、吸収性本体（１０）は、前側部（１０ＦＲ）と、後側部（１０ＢＲ）とを有し、前側部（１０ＦＲ）及び後側部（１０ＢＲ）は、上下方向におけるそれぞれの上端部、かつ、左右方向における吸収性コア（１１）よりも外側の領域で、一対の防漏壁部（４０）を起立不能に固定する端部固定部（８１，８２）を有し、前側部（１０ＦＲ）は、上端部で一対の防漏壁部（４０）と外装部材（２０）とを接合する前側接合部（７１）を有し、後側部（１０ＢＲ）は、上端部で前記一対の防漏壁部（４０）と外装部材（２０）とを接合する後側接合部（７２）と、上端部と下端部との間で一対の防漏壁部（４０）と外装部材（２０）とを接合する中間接合部（７３）と、を有している。【選択図】図５
