Flight test data processing is a key step in flight test. The flight test data is characterized by many types, large amount of data and complex algorithms. The flight test data processing system needs to have new capabilities such as rapid analysis of test data and timely sharing of cross-regional data. In this paper, on the basis of analyzing the original flight test data processing system, new methods such as data processing center and diversity point, diversity point and diversity point sharing, horizontal flight data splitting and separation processing are proposed, and a new flight test data processing system based on edge-cloud collaboration is designed. The test flight data processing, cross-regional data sharing and the whole process of subject implementation effect deduction and analysis are realized.