With　the　digital　transformation　and　increasing　demand　for　informatization　in　the　healthcare　industry,　traditional　centralized　information　systems　can　no　longer　meet　the　requirements　of　high-concurrency　access.　However,　microservices　architecture　offers　a　flexible　and　scalable　solution　that　effectively　addresses　the　complexity　and　high-concurrency　access　demands　of　healthcare　information　systems.　In　this　paper,　we　propose　a　microservices　system　that　adopts　a　distributed　architecture　combined　with　high-concurrency　processing　mechanisms.　The　system　disperses　various　modules　across　different　servers　as　micro-services,　and　each　microservice　can　independently　handle　requests.　This　distributed　and　parallel　processing　approach　improves　system　responsiveness　and　throughput　while　reducing　the　risk　of　single-point　failures.　To　validate　the　feasibility　and　performance　of　the　system,　we　conducted　a　series　of　experiments　and　evaluations.　The　results　demonstrate　that　the　distributed　healthcare　information　system　based　on　microservices　architecture　performs　exceptionally　well　in　handling　large-scale　data　and　high-concurrency　access.　The　system　not　only　provides　efficient　data　storage　and　retrieval　capabilities　but　also　exhibits　good　scalability　and　fault　tolerance.　©　2023　IEEE.