This Hair bright purpose gives Cis benefits in the equal Uniform Di Fu of what Ti Gong mono- Seed and absorbs the characteristic of the bright permeable not Woven cloth of the permeable not Woven cloth , of water penetration of Niao Huo Body liquid etc. this Hair in what:Qi Department includes the not Woven cloth of Ju Xi Hydrocarbon systems Hot Su Fiber Victoria, and the average value and CV Zhi Fen Do As 90 mm or less and 5.0 of The not permeable 45 ° Pour Xie Liu Long values in the directions MD of Woven cloth are hereinafter, and the 2nd permeable durable 60% or less the R values As for referring to Number.本發明之目的在於提供一種均勻地賦予順利吸收尿或體液等之透水性之透水不織布,本發明之透水不織布之特徵在於:其係包含聚烯烴系熱塑性纖維之不織布,且該不織布之MD方向中之透水45°傾斜流長值之平均值及CV值分別為90 mm以下及5.0以下,且第2次透水耐久指數之R值為60%以下。