The cabinet-protecting waterproof mat is specifically designed to prevent water damage for sink base cabinets and to alert the owner when there is water leakage. The main mat is waterproof, mildew resistant, and catches water that may have dripped or leaked on the main pad, surrounded by an elevated lip. The mat has a battery-powered sensor to detect when water is collecting on the mat. Furthermore, the sensor is connected to a speaker to emit beeping noises when water is detected or if the battery needs replacing. The volume of said beeping can be set to high or low, and the power can be turned on or off by corresponding buttons.