diff --git a/app.py b/app.py
index 3941c297..6b0957f9 100755
--- a/app.py
+++ b/app.py
@@ -11128,6 +11128,14 @@ def get_events_by_mainline():
 
         app.logger.info(f'[mainline] 查询到 {len(related_concepts_query)} 条概念关联')
 
+        # 调试：输出一些 related_concepts 的样本
+        sample_concepts = list(set([c for _, c in related_concepts_query[:100]]))[:20]
+        app.logger.info(f'[mainline] related_concepts 样本: {sample_concepts}')
+
+        # 调试：输出一些 hierarchy 的样本
+        hierarchy_sample = list(concept_hierarchy_map.keys())[:20]
+        app.logger.info(f'[mainline] hierarchy 概念样本: {hierarchy_sample}')
+
         # ==================== 4. 按 lv2 分组事件 ====================
         mainline_groups = {}  # { lv2_id: { info: {...}, events: [...] } }
         ungrouped_events = []