An intelligent sensing device with a warning function contains a flexible sensing pad, a signal processing device, a signal transmission device, a chargeable battery, and a signal receiving device. The flexible sensing pad senses a change of a connect signal by using a multi sensing mechanism. The signal processing device is electrically connected with the flexible sensing pad and processes a sensing signal transmitted by the flexible sensing pad. The signal transmission device is electrically coupled with the signal processing device and transmits a warning signal from the signal processing device. The chargeable battery supplies power to the signal processing device. When the power is less than a predetermined potential value, the signal processing device starts a low-level warning light or a low-level warning signal to indicate need to charge power. The signal receiving device receives the transmitted warning signal from the signal transmission device.
