diff --git a/src/api/templates/visualizer.html b/src/api/templates/visualizer.html
index c21c5ffca..0f1f29838 100644
--- a/src/api/templates/visualizer.html
+++ b/src/api/templates/visualizer.html
@@ -1028,8 +1028,8 @@
             console.log(`准备更新图形: ${nodeCount} 个节点, ${edgeCount} 条边`);
 
             // 对于超大数据集，进一步限制
-            const MAX_RENDERABLE_NODES = 5000;
-            const MAX_RENDERABLE_EDGES = 10000;
+            const MAX_RENDERABLE_NODES = 10000;
+            const MAX_RENDERABLE_EDGES = 20000;
             
             let nodesToRender = data.nodes;
             let edgesToRender = data.edges;
diff --git a/src/memory_graph/utils/memory_formatter.py b/src/memory_graph/utils/memory_formatter.py
index fac7d45a2..7731ca256 100644
--- a/src/memory_graph/utils/memory_formatter.py
+++ b/src/memory_graph/utils/memory_formatter.py
@@ -84,12 +84,12 @@ def format_memory_for_prompt(memory: Memory, include_metadata: bool = False) ->
         if object_node is not None:
             # 有完整的主谓宾
             if core_relation:
-                parts.append(f"{subject_text}{topic_text}{core_relation}{object_node.content}")
+                parts.append(f"{subject_text}-{topic_text}{core_relation}{object_node.content}")
             else:
-                parts.append(f"{subject_text}{topic_text}{object_node.content}")
+                parts.append(f"{subject_text}-{topic_text}{object_node.content}")
         else:
             # 只有主谓
-            parts.append(f"{subject_text}{topic_text}")
+            parts.append(f"{subject_text}-{topic_text}")
 
         # 添加属性信息
         if attributes: