In order to promote the dissemination of traditional housing culture of ethnic minorities, a dissemination model based on digital interactive technology and a virtual traditional architecture roaming interactive system are constructed in turn. The current situation of the dissemination of ethnic minority traditional housing culture is interpreted, and the digital interactive technology is used to design the corresponding dissemination model and interactive method to address the existing problems. Determine the research subjects, synthesize the independent sample t-test and experimental simulation test to explore the communication mode and interactive system. The significant difference between this model and the traditional model in the dimensions of interestingness, richness and authenticity, with P<0.05, demonstrates the facilitating effect of this model on the dissemination of minority housing culture. Compared with the reference system (an interactive system based on the .NET platform), the system in this paper increases the number of effective user interactions by about 44% or more, which confirms the superiority of the virtual traditional architecture roaming interactive system in the field of minority traditional architecture culture dissemination.