The traditional roof is placed in a homestay with modern style design, which is more integrated in the natural scenery, has ethnic characteristics, and conforms to the folk style. At the same time, the integration of advanced digital technology into household products has also become a new direction of the household industry. With the blessing of new technologies, smart home products can provide people with a more comfortable and convenient life. This paper takes the concept of regional culture as the starting point to think about the problem of the interior design of the country house. Through the investigation and analysis of different groups of young and middle-aged tourists and the analysis of related cases, the interior design of the house is carried out from the aspects of optimizing the spatial scale, updating the spatial function, using native plants and materials, and organizing spatial activities.