“Time series InSAR technology has been widely used in bridge structural health monitoring due to its advantages of all-weather, all day, high precision, and high spatial resolution. This article introduces its research progress in the field of large-scale bridge monitoring. The research team has established an adaptive segmented unwrapping algorithm system, which has been proven to be more robust than the MCF algorithm. It provides a solution to the problem of phase jump in expansion joints and lays the foundation for the construction of a large-scale bridge health monitoring system.”