A drawer-type bathroom water saver comprises a box (1) having an upper end for standing thereon, and a drainage grate (11) disposed at the upper end of the box (1) for water to pass therethrough; and an opening provided at one side of the box (1). A water storage drawer (12) is arranged at the opening and has a cavity (121) provided therein for placing a bowl. A sliding wheel structure is provided between the water storage drawer (12) and the box (1). When in use, the drawer type bathroom water saver is arranged in a bathroom, a user can step onto the box (1) to take a shower, water runs off the user's body, and flows into the bowl in the water storage drawer (12) via the drainage grate (11). When washing floors or flushing a toilet, the water storage drawer (12) can be pulled out, and the bowl containing water can be taken out to reuse the water, thereby reducing water wastage.