The present invention relates to a cooking appliance used for boiling or cooking food, or more particularly, to a cooking pot, which can rapidly heat water or food, and thereafter can suppress overflowing of water or food therein, while simultaneously maintaining its suitable temperature and pressure, thereby shortening its cooking time while enhancing its safety and convenience during cooking. For this purpose, the cooking pot according to the present invention has a body, into which water or food is placed, and a lid, which covers or uncovers the top opening of said body, wherein said lid comprises an auxiliary heating means at the backside thereof, protruding toward inside of said body, the rim of the backside of which protrudes toward in the direction, to which lid is fitted into said body; a side portion of said lid, having a discharging means of steam, which can be adjusted to discharge steam according to an increase in steam pressure inside said cooking pot; and a knob at the upper side of said lid, having a power connection means, connecting or disconnecting to an outside power supply means, which is electrically connected to said auxiliary heating means.