The invention discloses an intelligent alarming device convenient to install and suitable for a water heater. The intelligent alarming device convenient to install and suitable for the water heater comprises the water heater. The front face of the water heat is welded to an installing plate. The water heater is connected with an intelligent alarming device body in a clamed mode through the installing plate. According to the intelligent alarming device convenient to install and suitable for the water heater, by arranging the installing plate, a connecting block is arranged on the alarming device body, after the connecting block is inserted in the installing plate, by matching with clamping plates which are arranged in the installing plate, the connecting block is clamped, bumping blocks arranged on the clamping plates are matched with limiting grooves of the connecting block, the installation of the connecting block on the installing plate can be firmer, and meanwhile, the installation of the alarming device body is more convenient; and the problems that during installing an existing intelligent water heater alarming device referred in the background technology, an installing way that mostly, screw holes are formed in the water heater, then the alarming device is installed on the water heater by using screw bolts is very complicated, needs help from tools, wastes time and energy and not convenient are solved.