Disclosed is a pet sanitary pant, including a flaky water absorption body and a main body part that clamps and fixes the water absorption body and at least has a double-layer structure； the main body part includes an upper girdle part and lower girdle part at both ends of a length direction； adhesion parts are arranged at both ends of a width direction of the lower girdle part for adhering the upper girdle part to cylindrically cover a pet waist during wearing； a tail passing part for a pet tail to pass through is arranged at a hip position on the main body part； and a stereoscopic wrinkle part capable of erecting towards the pet skin is arranged on the inner side of the length direction of the lower girdle part. Due to the technical solution, excrement overflow from the pet waist is prevented to better guarantee cleanness.
