A microwave oven, a relay box communicating with the microwave oven and a personal computer communicating with the relay box are provided in private. The personal computer is connected to a host computer storing home page information, through the public Internet. A home page storing unit of the host computer stores, corresponding to each of a plurality of cooking recipes, recipe data directly recognized by microwave oven including heating control data for heating and cooking the cooking recipe by the microwave oven, a button to be operated for transferring the recipe data through the Internet to personal computer and image display data for displaying information related to the cooking recipe as a home page image display. Therefore, in accordance with the heating control data downloaded and supplied to personal computer, microwave oven is controlled to heat and cook the desired cooking recipe.