Provided is a method and device for an electronic cooker to control heat preservation. The method includes: acquiring holding temperature data for a food； predicting serving time point data for the food； acquiring serving temperature data for the food at a time point indicated by the serving time point data； determining time point data of terminating the heat preservation for the food in accordance with the serving time point data, the serving temperature data, and the holding temperature data； and terminating the heat preservation for the food at a time point indicated by the time point data of terminating the heat preservation.
