The　residual　stresses　engendered　by　16　different　shot　peening　technologies　were　researched　and　analyzed　systemically　by　using　x-ray　method　in　this　paper.　For　each　shot　peening　work-piece,　4　different　test　points　were　chosen　and　8　different　depths　0~250μm　under　the　surface　for　each　point　were　tested　by　step-by-step　electrolytic　polishing　method.　And　then　the　equations　of　polishing　electric　current,　depth　and　time　were　figured　out　by　experimental　demarcation　using　self-making　fixture,　which　solved　the　problem　that　data　obtained　and　measured　accurately　at　25μm　depth,　and　got　the　residual　stress　distribution　of　these　16　technologies.　It　was　shown　that　the　max　residual　compress　stress　of　home　made　shot　peening　was　at　the　depth　of　50μm　under　the　surface　and　the　influence　layer　was　150μm　depth,　while　50~75μm　and　200μm　respectively　for　the　import　one.　The　rotating　speed　of　throwing　wheel　is　proportional　to　the　A1　value,　and　the　max　residual　stress　increased　slightly　along　with　Al　value　but　no　quantity　relationship　between　them.　The　depth　of　residual　stress　influence　layer　after　shot　peening　has　directly　relation　with　shot　character,　but　rotating　speed.