Liquid heater

The utility model belongs to the technical field of household appliances, and particularly discloses a liquid heater which comprises a kettle body and a heating element, the kettle body comprises a kettle body and a kettle bottom, the kettle bottom comprises an arc-shaped wall extending upwards and outwards and a vertical wall vertically extending upwards from the top end of the arc-shaped wall, and the heating element is fixed on the outer side of the arc-shaped wall. The top end of the vertical wall is welded to the kettle body, and the wall thickness of the kettle body is larger than that of the vertical wall so that a step can be formed at the welding position. On the basis of improving the water boiling noise, the machining cost is reduced, the yield is improved, compared with the mode that the top end of the arc-shaped wall is directly welded to the kettle body, the alignment difficulty is reduced, alignment gaps are avoided, the alignment precision requirement between the kettle body and the kettle bot