Abstract: The geographical differences and the cultural fusion brought by migration in northern Guangdong have led to the diversity and atypicality of clan architecture types in the region. Combined with Google earth, ArcGIS and field research, this paper sampled and quantitatively analyzed the ancestral buildings along the ancient postage routes in northern Guangdong (Chating-Lianjiang waterway ancient route, Yile and Xijing ancient route, Chengkou Xiangyue ancient route and Yue-Gan ancient route), established a database, and used SPSS analysis software to sort out the relationship between local ancestral buildings and ancient routes and villages, the characteristics of the villages where they are located, the types of flat facades, architecture and spatial relationships. After establishing the database, SPSS analysis software was used to sort out the relationship between local ancestral shrine architecture and ancient roads and villages, the characteristics of the village, the type of facade, the structure and the spatial relationship. The study of 89 ancestral buildings along the ancient roads is used as a starting point to clarify the morphological construction and spatial characteristics of the ritual buildings by using the change patterns of different plan types and their evolutionary motives as clues.