Abstract: A waterproof-state recognition and processing method and device is applicable to a capacitive touch screen. The method and device can differentiate a water-affected region from a water-free region, and allow a touch-responding operation for the water-free region when the water-affected region exists. The method includes: scanning the screen to obtain data of multiple channels of the screen; determining whether any of the data reaches a waterproof threshold; when any of the data reaches the waterproof threshold, performing a waterproof-state process; when none of the data reaches the waterproof threshold, determining whether any of the data reaches a finger-touch threshold; when any of the data reaches the finger-touch threshold, performing a finger-touch-state process; and when none of the data reaches the finger-touch threshold, performing an idle-state process.