In　the　Internet　of　Things　(IoT)　scenario,　the　hardware　resources　in　the　edge　computing　paradigm　are　limited,　so　the　applications　in　the　cloud　computing　paradigm　are　not　suitable　for　edge　computing.　New　system　architecture　and　key　technologies　are　needed　for　application　implement　and　deployment　in　edge　computing.　Based　on　the　hardware　performance　constraints　and　scene　functional　requirements　under　edge　computing,　this　paper　designs　and　develops　a　microservice　system　for　edge　computing.　So　it　introduces　the　design　of　microservice　system　architecture　for　edge　computing.　And　it　analyzes　the　key　technologies　of　the　system.　It　selects　the　PostgreSQL　database　to　achieve　data　storage,　the　Flask　framework　to　build　back-end　services,　and　the　Vue.js　framework　to　build　front-end　services.　Meanwhile,　docker　containers　are　used　for　system　deployment　and　testing.　The　test　results　prove　that　the　system　has　perfect　functions　and　stable　operation,　which　is　very　suitable　for　edge　devices　with　limited　resources.　According　to　the　start-up　time　and　resource　consumption　of　the　project,　the　distributed　deployment　of　applications　has　better　performance　than　the　unified　deployment.　Copyright　(C)　2020　The　Authors.