The physiological pants of the present invention comprise: a clothing layer, a waterproof layer, a water storage layer and a water-permeable layer; the clothing layer constructs a clothing; the waterproof layer is a surrounding wall to enclose the water storage space; the water-permeable layer and the water storage layer are arranged in the water storage space; wherein, the water-permeable layer includes a first layer body and a second layer body. The first layer body is formed with a plurality of first water-permeable holes, and the second layer body is formed with a plurality of second water-permeable holes smaller than the first water-permeable hole, so that a plurality of tapered holes are collectively formed inside the water-permeable layer by the first water-permeable hole and the second water-permeable hole, so as to prevent the liquid in the water storage layer from easily passing through the water-permeable layer when the water storage layer is squeezed.