Typology is one of the most active core words in contemporary architectural debates and occupies a very important position in contemporary western thought. Typology theory in architecture is not a concrete architectural design operation at first, but a way of understanding and thinking. In the eighteenth century, a continuous and unified system was classified and applied to architecture, so there was architectural typology. If we distinguish this theory from the main scholars and schools in this field, Ma Lao Gill's original thatched cottage theory belongs to the classification of appearance, while JNDurand is the classification of internal structure. In addition, according to M. Bandini's classification, the main viewpoints of typology can be summarized as: 1. Urban reading methods, mainly Venetian School and French Urban School, including aldo rossi and Rafael Moneo, which emphasize the comprehensiveness of cities and discuss urban typology and architectural types. Secondly, in the cultural sense, typology is regarded as a method of architectural style, represented by G.Argan. Thirdly, typology is regarded as a theory and tool of architectural production. This theory comes from Quatremere de Quincy, represented by OMUngers and others.