diff --git a/src/views/Concept/ConceptTimelineModal.js b/src/views/Concept/ConceptTimelineModal.js
index ef3e8e80..730f9687 100644
--- a/src/views/Concept/ConceptTimelineModal.js
+++ b/src/views/Concept/ConceptTimelineModal.js
@@ -478,23 +478,9 @@ const ConceptTimelineModal = ({
     useEffect(() => {
         if (isOpen && conceptId) {
             fetchTimelineData();
-            setExpandedDates({}); // 重置展开状态
         }
     }, [isOpen, conceptId]);
 
-    // 切换日期展开状态
-    const toggleDateExpand = (date) => {
-        const willExpand = !expandedDates[date];
-
-        // 🎯 追踪日期展开/折叠
-        trackDateToggled(date, willExpand);
-
-        setExpandedDates(prev => ({
-            ...prev,
-            [date]: !prev[date]
-        }));
-    };
-
     // 格式化日期显示（包含年份）
     const formatDateDisplay = (dateStr) => {
         const date = new Date(dateStr);