The dynamic evaluation of technological attributes of technology companies is often constrained by single-source data, facing issues such as narrow assessment dimensions and delayed feedback. This paper focuses on the application of multi-source heterogeneous data integration in the field of technology finance. It elaborates on its origin and connotation, analyzes the significance of its integration and application, discusses key issues in the implementation process, details specific implementation methods, and demonstrates its practical application in aspects such as technological innovation, growth and operation, and regional adaptation evaluation.