The invention discloses a water-saving device for bathing pets. The device comprises a support box which is of a circular shape, a storage chamber is formed inside the support box, a water inlet end is arranged at the upper end surface of the support box, and a filter-screen plate is arranged at the upper end of the water inlet end; filter holes are evenly distributed on the filter-screen plate. The water-saving device for bathing the pets has a simple and reasonable structure, recycling of water resources is achieved, and a water-saving effect is achieved; when the device is in use, water isdelivered into a buffer chamber through a water pump, and the water is sprayed through water spraying holes, and therefore subsequent bathing of the pets is facilitated, so that combing and bathing are conducted at the same time, and the bathing effect of the pets is thus improved; when hair on combing rods needs to be cleaned later, only a movable scraper needs to be slid downwards along the combing rods, and scraping of the hair is thus facilitated, so that decrease of difficulty of subsequent cleaning is facilitated; in addition, after cleaning is completed, an air heater can be started andused for drying the pets, and practicality of the device can be further improved.