diff --git a/src/event.rs b/src/event.rs
index 93a85f0..f844243 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -159,14 +159,14 @@ impl EventManager {
                                 value_changed,
                             };
 
-                            if let Err(e) = connection_manager.update_point_monitor_data(monitor.clone()).await {
+                            // 只克隆一次 monitor，减少内存分配
+                            let monitor_clone = monitor.clone();
+                            if let Err(e) = connection_manager.update_point_monitor_data(monitor_clone).await {
                                 tracing::error!("Failed to update point monitor data for point {}: {}", point_id, e);
                             }
 
                             if let Some(ws_manager) = &ws_manager_clone {
-                                let ws_message = crate::websocket::WsMessage::PointNewValue(
-                                    monitor.clone(),
-                                );
+                                let ws_message = crate::websocket::WsMessage::PointNewValue(monitor);
 
                                 if let Err(e) = ws_manager.send_to_public(ws_message.clone()).await {
                                     tracing::error!("Failed to send WebSocket message to public room: {}", e);