Abstract: The cooker cover enables a food material in a cooker to be turned over in the cooker or withdrawn from the cooker through an opening formed cut thereon, while the cooker cover is seated on the top periphery of the cooker during cooking, thereby making it very convenient to cook, enables the steam generated in the cooker to be emitted through an outer door and a plurality of ventilation holes formed on the outer door, thereby improving the taste of the cooked food material, and prevents oil from being scattered to the outside of the cooker during cooking, thereby making the surrounding places from being maintained in a clean state and preventing a fire or burn from occurring.