An electric pot, comprising: a supporter configured to receive electric power from a power supply; a pot main body detachably coupled to an upper end of the supporter, the pot main body is configured to be operated by electric power received from the supporter, the pot main body includes a heater for heating contents accommodated in the pot main body and a temperature sensor for measuring a temperature of the contents; an input part configured to receive an input in relation to a temperature-maintenance operation of the contents and/or an input for driving of the heater from a user; a controller configured to receive the input in relation to a temperature-maintenance operation from the input part, and to receive information on a temperature of the contents from the temperature sensor, and to control the heater based on the received input in relation to a temperature-maintenance operation and based on the received information on a temperature of the contents to perform the temperature-maintenance operation; and a memory configured to receive information in relation to a temperature-maintenance operation from the controller and to store the information, and to retain the stored information in relation to a temperature-maintenance operation regardless of whether the pot main body is attached to and detached from the supporter, wherein, when the pot main body is separated from the supporter in a state in which the temperature-maintenance operation is initiated, the controller is configured to stop the temperature-maintenance-operation, to stop counting of the entire temperature-maintenance-continuation period, to update the information in relation to a temperature-maintenance operation, and to provide the updated information to the memory at the time of separation; and wherein, when the pot main body separated from the supporter is re-coupled to the supporter, the controller is configured to determine whether to re-initiate the temperature-maintenance operation based on the updated information. a supporter configured to receive electric power from a power supply; a pot main body detachably coupled to an upper end of the supporter, the pot main body is configured to be operated by electric power received from the supporter, the pot main body includes a heater for heating contents accommodated in the pot main body and a temperature sensor for measuring a temperature of the contents; an input part configured to receive an input in relation to a temperature-maintenance operation of the contents and/or an input for driving of the heater from a user; a controller configured to receive the input in relation to a temperature-maintenance operation from the input part, and to receive information on a temperature of the contents from the temperature sensor, and to control the heater based on the received input in relation to a temperature-maintenance operation and based on the received information on a temperature of the contents to perform the temperature-maintenance operation; and a memory configured to receive information in relation to a temperature-maintenance operation from the controller and to store the information, and to retain the stored information in relation to a temperature-maintenance operation regardless of whether the pot main body is attached to and detached from the supporter, wherein, when the pot main body is separated from the supporter in a state in which the temperature-maintenance operation is initiated, the controller is configured to stop the temperature-maintenance-operation, to stop counting of the entire temperature-maintenance-continuation period, to update the information in relation to a temperature-maintenance operation, and to provide the updated information to the memory at the time of separation; and wherein, when the pot main body separated from the supporter is re-coupled to the supporter, the controller is configured to determine whether to re-initiate the temperature-maintenance operation based on the updated information.