PROBLEM TO BE SOLVED: To easily detect a position of a target sheet without a register mark.SOLUTION: The invention relates to a tape type disposable diaper which comprises: a crotch part M including a center of a cross direction LD; an abdominal side part F extending forward from the center of the cross direction LD; and a back side part B extending rearward from the center of the cross direction LD. Each of both side parts of the back side part B has a connection part 83 which is detachably connected to an external face of the abdominal side part F, and on an external face of the abdominal side part F, a target sheet 20 to which the connection part 83 is connected, is arranged. On at least one of an internal face and external face of the target sheet 20, whiteness of all corner parts 21 is 80% or greater, in the disposable diaper.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】レジマークを要せずにターゲットシートの位置検出を容易にする。【解決手段】上記課題は、前後方向LD中央を含む股間部Mと、前後方向LD中央より前側に延びる腹側部分Fと、前後方向LD中央より後側に延びる背側部分Bとを有し、背側部分Bの両側部に、腹側部分Fの外面に着脱可能に連結される連結部83を有し、腹側部分Fの外面に、連結部83が連結されるターゲットシート20を有し、ターゲットシート20の内面及び外面の少なくとも一方における、すべての隅部21の白色度が80%以上である、テープタイプ使い捨ておむつにより解決される。【選択図】図2