Abstract:Yangshi Lei designed a number of western style architectures,includes gardens,governments,residential architectures and factories,and attempted to implement modern transformation. Because of the typicality of industrial architectures,it researches Tianjin East Arsenal as a case. Combining with historical archives and images,it interprets the Yangshi Lei archives and analyses its architectural planning. This case combined Chinese traditional architecture and western modern industrial architecture planning principles. It also reflects the mixed features of Chinese and Western,tradition and modernity in the modern architectural transformation period.