The invention an electric kettle for improving water quality and water boiling efficiency. The electric kettle comprises an inner container and a lining cover, the lining cover is buckled on the inner container, a water outlet and a steam outlet are arranged in the lining cover, a water outlet switch unit is arranged in the water outlet and in a normally-closed state, the water outlet switch unit can be opened when water is to be let out, a steam valve is arranged in the steam outlet and can be opened when steam reaches comes to a certain pressure, an accommodation cavity is arranged under the lining cover, a plurality of medical stone particles are arranged in the accommodating cavity, a plurality of lower-layer water outlet holes are arranged in the lower portion of the accommodation cavity, the situation that a great deal of steam spreading to the outer space is prevented, and when the critical boiling state is reached, the electric kettle stops heating. The electric kettle is rapid in response and energy saving, chemical elements beneficial to human body are separated from medical stones, and the effect of magnetizing active water is achieved.