A cooking appliance including a cooking chamber configured to cook food therein and openable in a first direction, a shelf provided to be inserted into the cooking chamber in the first direction and having a cooking surface on which food is placed, a magnetron configured to generate high frequency waves to be supplied to the shelf, and a heat generating member configured to generate heat by the high frequency waves generated by the magnetron. Where the cooking surface includes a first area on one side and a second area on another side, the heat generating member includes a first heat generating portion configured to supply heat to the first area and a second heat generating portion disposed to correspond to the second area, and the first heat generating portion supplies more heat to the first area than the second heat generating portion supplies to the second area.