The invention discloses a water and electricity integrated intelligent heating device which comprises an oil quantity sensor, an electromagnetic valve, a PLC, a temperature sensor, a copper plate and a circulating water pipe. The oil quantity sensor is arranged on the top of an oil tank. A diesel oil coarse filter is arranged on one side of the oil tank. An engine oil pump is installed on the outer side of an engine. A diesel oil fine filter is arranged in an inner cavity of the engine. A water input pipe is provided with the electromagnetic valve. An oil floater and an oil level induction pipe are arranged in the inner cavity of the oil tank. The temperature sensor is embedded in the inner wall of the oil tank. The copper plate is provided with the circulating water pipe. The two ends of the circulating water pipe are connected with the water input pipe and a water return pipe correspondingly. The water and electricity integrated intelligent heating device is provided with the copper plate, heat in the circulating water pipe is transferred to the copper plate to be stored, the heating area is large, the temperature sensor is embedded and detects the oil temperature in the oil tank, and an automatic warning device is arranged and carries out warning automatically when the oil temperature exceeds the set range.