Abstract: Electron beam welding is applied to manufacturing many superalloy components of aeroengine, but the researches of weld residual stress were very few for those components. In this paper, weld residual stress of GH536 superalloy components with EBW were measured by Mathar method. Test results showed that residual stress is low in the weld and its distribution accords with the traditional rules. This research can accumulate experiences and properties data for manufacturing aeroengine components with EBW.