diff --git a/novalon-manage-api/manage-sys/src/main/java/cn/novalon/manage/sys/core/service/impl/SysNoticeService.java b/novalon-manage-api/manage-sys/src/main/java/cn/novalon/manage/sys/core/service/impl/SysNoticeService.java
new file mode 100644
index 0000000..74a7dab
--- /dev/null
+++ b/novalon-manage-api/manage-sys/src/main/java/cn/novalon/manage/sys/core/service/impl/SysNoticeService.java
@@ -0,0 +1,59 @@
+package cn.novalon.manage.sys.core.service.impl;
+
+import cn.novalon.manage.sys.core.domain.SysNotice;
+import cn.novalon.manage.sys.core.service.ISysNoticeService;
+import cn.novalon.manage.sys.core.service.IWebSocketService;
+import cn.novalon.manage.sys.infrastructure.db.converter.SysNoticeConverter;
+import cn.novalon.manage.sys.infrastructure.db.dao.SysNoticeDao;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+public class SysNoticeService implements ISysNoticeService {
+
+    private final SysNoticeDao dao;
+    private final SysNoticeConverter converter;
+    private final IWebSocketService webSocketService;
+
+    public SysNoticeService(SysNoticeDao dao, SysNoticeConverter converter, IWebSocketService webSocketService) {
+        this.dao = dao;
+        this.converter = converter;
+        this.webSocketService = webSocketService;
+    }
+
+    @Override
+    public Flux<SysNotice> findAll() {
+        return dao.findByDeletedAtIsNull()
+                .map(converter::toDomain);
+    }
+
+    @Override
+    public Flux<SysNotice> findByStatus(String status) {
+        return dao.findByStatusAndDeletedAtIsNull(status)
+                .map(converter::toDomain);
+    }
+
+    @Override
+    public Mono<SysNotice> findById(Long id) {
+        return dao.findById(id)
+                .map(converter::toDomain);
+    }
+
+    @Override
+    public Mono<SysNotice> save(SysNotice notice) {
+        return dao.save(converter.toEntity(notice))
+                .map(converter::toDomain)
+                .flatMap(savedNotice -> {
+                    return webSocketService.notifyNewNotice(
+                            savedNotice.getNoticeTitle(),
+                            savedNotice.getNoticeContent()
+                    ).thenReturn(savedNotice);
+                });
+    }
+
+    @Override
+    public Mono<Void> deleteById(Long id) {
+        return dao.deleteByIdAndDeletedAtIsNull(id);
+    }
+}