A multifunctional pet diaper includes a surface layer, absorbing layer and anti-leak layer overlapping with each other. A middle section of the absorbing layer defines an absorbing area. A peripheral section of the surface layer and the anti-leak layer surrounds the absorbing area. An area of the anti-leak layer is larger than an area of the absorbing layer, and an area of the surface layer is larger than the area of the absorbing layer. The pet diaper further includes more than one detecting member in the absorbing area. The detecting members are configured to collect and detect urine and/or feces, and to directly show the test results by changing the color of the detecting members.
