The building structure monitoring system based on big data is an intelligent monitoring and prediction technology for monitoring,data analysis and prediction of the physical parameters of the building structure in real time manner,so as to prolong the service life of the buildings and ensure the safety of people's lives and property.It includes several modules such as data acquisition,transmission,storage,processing,visualization,application and system security.The main goal is to timely detect building structural problems,take corresponding maintenance and reinforcement measures,ensure the safety and stability of civil engineering structures,and avoid safety accidents.This paper mainly discusses the design of building structure health monitoring system,for reference.