As the epitome of urban industrial civilization, urban industrial heritage has important social, historical, technological, aesthetic and other multiple values. How to rationally update and reuse it has become an important part of the urban development process. This paper takes the relic site of Wuxi Maoxin Flour Mill as an example. Through site inspection and questionnaire distribution, it explores its spatial status and existing problems from a landscape perspective, uses multiple regression analysis to obtain relevant influencing factors, use Extension innovation methods to deal with site contradictiory problems and generate multiple update strategies, and finally select the most appropriate update strategy through the superiority evaluation method. Using qualitative and quantitative research methods, a more scientific and targeted renewal plan is proposed to provide methodological reference for industrial heritage landscape renewal research.