An overflow-resistant diaper suitable for detachably wearing on the periphery of a wearer's torso, the diaper comprising a covering unit and a collecting unit. The cladding unit includes a discharge zone that defines at least one discharge port that communicates with the top and bottom. The collecting unit includes a bag body formed on a lower side of the discharge zone, and a valve disposed in the bag body and deformably blocking the lower side of the discharge zone, the bag body and the valve cooperate to define a receiving space. And two overflow prevention passages connected to the at least one discharge port by the receiving space. By means of the setting of the collecting unit, the feces and urine for the wearer are suitable to fall into the accommodating space, and the posture of the wearer is used to control whether the valve is deformed by pressing, thereby switching the overflow prevention The passage can prevent the feces falling into the accommodating space from overflowing in the reverse direction, and can have a good wearing effect.一種防溢出之隔離式尿布，適用於可拆離地穿著在一位穿戴者之軀幹底部外圍，該隔離式尿布包含一個包覆單元，及一個收集單元。該包覆單元包括一個排放區，該排放區界定出至少一個頂底連通的排出口。該收集單元包括一個形成於該排放區下側的袋體，及一個設置在該袋體內且可變形地遮擋在該排放區下方的閥門，該袋體及該閥門相配合界定出一個容納空間，及兩個由該容納空間連通至該至少一個排出口的防溢通道。藉由該收集單元的設置，適用於供該穿戴者排出的糞便及尿液落入該容納空間內，並藉由該穿戴者的姿態，來控制是否壓迫該閥門變形，藉以開關該等防溢通道，故可避免落入該容納空間的糞便反向溢出，能具有良好的穿著效果。
