With the development of science and technology and speed up of information dissemination, the world more and more demonstrates a unification trend, which leads to great impact on regional culture. In this background, exploration of regional culture's application and research in the field of interior design has important meaning and function. Meanwhile, regional culture with distinctive characteristics and rich content also has important value in interior design teaching. Combined with the current problems in interior design teaching, this paper put forward the significance of interior design teaching based on regional cultural elements, and explored the teaching methods based on regional culture factors by taking dining space design as an example.