Heating device of electric water heater

The utility model provides a heating device of an electric water heater. The heating device comprises an inner container, a cold water pipe, a hot water pipe, a heating pipe bundle and an outer cover, wherein the cold water pipe and the hot water pipe are arranged in the inner container; the heating pipe bundle is arranged at the bottom in the inner container; the outer cover is covered outside the heating pipe bundle; a plurality of water inlets are arranged on the side wall of the outer cover; at least one water outlet is formed at the top of the outer cover; water in the inner container can flow into the outer cover from the water inlets on the side wall of the outer cover; and after being heated by the heating pipe bundle, the water can flow out from the water outlet(s) arranged at the top of the outer cover. Therefore, the naturally stirred water flow can be formed, and forced circulation is realized, so that the temperature equilibrium property of the water in the container is better, and the heating ef