Abstract: Exploring digital twin modeling methods driven by multi-source data mapping and virtual real dynamic calibration is of great significance in the face of the complex operating environment of wind turbine blades, strong coupling of multi-source data, and difficulty in maintaining virtual real consistency. The article analyzes the multi-source data mapping and virtual real dynamic calibration mechanism, and creates a digital twin modeling method system for wind turbine blades, aiming to provide technical support for wind turbine blade state perception and intelligent operation and maintenance.