Liquid heater

The utility model relates to the field of small household appliances, in particular to a liquid heater. The electric kettle comprises a kettle body assembly provided with an upper coupler and a power source base provided with a lower coupler, the kettle body assembly comprises an inner container and a stirring assembly, the stirring assembly comprises a stirring shaft arranged in the upper coupler in a penetrating mode, a heating disc is arranged at the bottom of the inner container, the stirring shaft penetrates through the heating disc and extends into the inner container, and a driving shaft arranged in the lower coupler in a penetrating mode is arranged on the power source base. The stirring shaft is in transmission connection with the driving shaft, a support is fixed to the upper coupler, a lining is arranged on the kettle body assembly and provided with a concave cavity which is concave downwards, an avoiding hole for the stirring shaft to penetrate through is formed in the bottom wall of the concave c