The invention provides a switch and an electric kettle. The electric kettle has the switch; the switch comprises: a key connected at the inner end with a body of a cooking appliance and at the outer end with a decoration, with the inside of the key having a mounting cavity; the decoration mounted at the outer end of the key; and a light source mounted in the mounting cavity; wherein the decoration is a light-pervious part and locked and fitted to the key. The switch is small in size and simple in structure and helps a consumer to observe an indicator light and the consumer to feel safer.