ARTICLE DATAChina's modernization is usually involved in the discussion of ancient Chinese architecture. The possibility of urban homogenization requires city planners to consider the function transformation of ancient Chinese architectures so that an individual city may maintain its unique identity. This article classifies ancient Chinese architecture into two categories according to initial service objects, and then discusses the function transformation of ancient Chinese architecture in modern times. Finally, it refers to the interactions between diverse groups in ancient Chinese architecture after the modern transformation with spatial studies. This article adopts two research methods: document analysis and case study analysis. The research results demonstrate that ancient Chinese architectural classification without a specific condition is indiscernible. Under the guise of heterogenization, the functional transformation of ancient architectures is usually accompanied by a commercial intention. Besides, architectural studies should extend to spatial studies with fluidity.