In order to solve the problem that multi-source heterogeneous (MSH) data is difficult to integrate during the flight control system test process in final assembly stage

a MSH data integration service based on representational state transfer (REST) architecture is designed and implemented. First

the source and influence of MSH data in the flight control digital test in final assembly stage are analyzed

and based on this

the equipment integration experiment platform for the flight control system test in final assembly stage is constructed. Based on the REST architecture

the integration service of MSH data has been designed

so that different devices have a unified data interface

the problems of complex operation and data heterogeneity of the flight control test equipment are solved

and MSH data integration is realized. Finally

taking air data test set

single-axis rate turntable and radio altimeter exciters as examples

the effectiveness of the MSH data integration method in the digital test of the flight control in final assembly stage based on REST architecture is verified.