With the development of economy and society, virtual reality technology has been paid more and more attention and gradually applied to various industries. Because of the interaction, immersion and real-time of virtual reality technology, its application in the field of architecture has a wide range of prospects. Especially in interior decoration and design, the advantages of this technology are unparalleled with other technologies. The interior design of virtual reality can make designers and users realize the effect of "what you see is what you get," and at the same time, make users feel the artistic conception in the virtual scene of this design. In this paper, with the audience residential buildings as the research object, the research and analysis of interior decoration are conducted using immersive virtual reality technology, which provides a theoretical basis for better research and development of interior design assisted by immersive VR technology.