With a disposable diaper (10) according to the present invention, a crotch stretch part (200a) is disposed in isolation from a girth retaining part and leg elastic members (71). Non-stretch regions are disposed in the fore girth region (20) side and the rear girth region (30) side of the crotch stretch part (200a) in the product longitudinal direction (L). The disposable diaper (10) comprises indicators (600) which are configured to straddle the crotch stretch part (200a), extending in the product longitudinal direction (L), and to visually change when in contact with moisture. It is possible to visually recognize said change from the non-skin-contact side (S1) of the disposable diaper (10).在本發明之用後即棄式紙尿布(10)，褲襠伸縮部(200a)係與腰圍保持部及腳彈性構件(71)分離而配置，在褲襠伸縮部(200a)的製品長度方向(L)之前腰圍區域(20)側及後腰圍區域(30)側，設有非伸縮區域，並具有跨越褲襠伸縮部(200a)而朝製品長度方向(L)延伸並構成為當與水分接觸時產生視覺上變化之指示器(600)，該變化可自用後即棄式紙尿布(10)的非肌膚抵接面側(S1)辨識。
