diff --git a/frontend/src/components/stock-table/StockDataTable.tsx b/frontend/src/components/stock-table/StockDataTable.tsx
index 8f2d778..9134e1b 100644
--- a/frontend/src/components/stock-table/StockDataTable.tsx
+++ b/frontend/src/components/stock-table/StockDataTable.tsx
@@ -43,9 +43,10 @@ export interface StockDataTableProps {
 }
 
 function alignThClass(align: ColumnConfig['align']): string {
-  if (align === 'right') return 'px-3 py-2.5 font-medium text-right'
-  if (align === 'center') return 'px-3 py-2.5 font-medium text-center'
-  return 'px-3 py-2.5 font-medium'
+  // 表头一律不换行: 窄列(如收起的图表列)中标签/排序箭头折行会把整行表头顶高
+  if (align === 'right') return 'px-3 py-2.5 font-medium text-right whitespace-nowrap'
+  if (align === 'center') return 'px-3 py-2.5 font-medium text-center whitespace-nowrap'
+  return 'px-3 py-2.5 font-medium whitespace-nowrap'
 }
 
 export function StockDataTable({
diff --git a/frontend/src/pages/Watchlist.tsx b/frontend/src/pages/Watchlist.tsx
index 29cd648..081e5b8 100644
--- a/frontend/src/pages/Watchlist.tsx
+++ b/frontend/src/pages/Watchlist.tsx
@@ -1525,7 +1525,8 @@ export function Watchlist() {
                 if (col.source.type === 'builtin' && col.source.key === 'candle') {
                   return (
                     <span className="inline-flex items-center justify-center gap-1.5">
-                      <span>{col.label}</span>
+                      {/* 收起态只留眼睛按钮, 避免标签在窄列内换行顶高表头 */}
+                      {dailyKChartVisible && <span className="shrink-0 whitespace-nowrap">{col.label}</span>}
                       <button
                         type="button"
                         onClick={(event) => { event.stopPropagation(); toggleDailyKChart() }}
@@ -1546,7 +1547,7 @@ export function Watchlist() {
                   const intradayAutoRefresh = intradayRefreshEnabled && realtimeRunning
                   return (
                     <span className="inline-flex items-center justify-center gap-1.5">
-                      <span>{col.label}</span>
+                      {intradayChartVisible && <span className="shrink-0 whitespace-nowrap">{col.label}</span>}
                       <button
                         type="button"
                         onClick={(event) => { event.stopPropagation(); toggleIntradayChart() }}