The invention relates to a cover body and a cooking utensil, and the cover body comprises an inner cover and an air pressure indicating piece, wherein the inner cover is arranged above the cooking main body in the cooking utensil, a cooking space is defined between the inner cover and the cooking main body, and an air port communicating with the cooking space is formed in the inner cover in a penetrating way; the air pressure indicating piece is movably connected to the inner cover and can move relative to the inner cover under the action of pressure difference between the cooking space and atmospheric pressure; and wherein the cover body further comprises an air pressure adjusting device, and when the air pressure indicating piece is located at a preset position relative to the inner cover, the air pressure adjusting device changes the flow direction of air flow in the air port and controls the pressure in the cooking space to be within a preset pressure range. When the air pressure indicating piece is in the preset position relative to the inner cover and the pressure in the cooking space is too high or too low, the air pressure adjusting device changes the flow direction of theair flow in the air port, so that the pressure in the cooking space is within the preset pressure range to ensure effective control of the pressure in the cooking space.