Through a comprehensive analysis of relevant literatures and in combination with questionnaire survey, a list of influencing factors on the vulnerability of the assembly building supply chain is derived. With the help of the principles of system dynamics, a feedback diagram model of assembly building supply chain vulnerability is constructed. Through qualitative analysis (using the feedback loop analysis method) and quantitative analysis (using fuzzy hierarchical analysis), the influencing factors of vulnerability of the assembly building supply chain were ranked in order of importance. Specific suggestions are proposed for each link of the supply chain to reduce the vulnerability of the assembly building supply chain.