diff --git a/src/components/StockChart/KLineChartModal.tsx b/src/components/StockChart/KLineChartModal.tsx
index dd684f72..e1c90b57 100644
--- a/src/components/StockChart/KLineChartModal.tsx
+++ b/src/components/StockChart/KLineChartModal.tsx
@@ -42,8 +42,6 @@ export interface KLineChartModalProps {
   eventTime?: string | null;
   /** 模态框大小 */
   size?: string;
-  /** z-index 层级（用于嵌套 Modal 场景） */
-  zIndex?: number;
 }
 
 /**
@@ -64,7 +62,6 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
   stock,
   eventTime,
   size = '5xl',
-  zIndex,
 }) => {
   const chartRef = useRef<HTMLDivElement>(null);
   const chartInstance = useRef<echarts.ECharts | null>(null);
@@ -459,15 +456,7 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
 
   if (!stock) return null;
 
-  // 计算实际使用的 z-index（使用超高值确保在最上层）
-  const overlayZIndex = zIndex || 9998;
-  const contentZIndex = zIndex ? zIndex + 1 : 9999;
-
-  console.log('[KLineChartModal] z-index 设置:', {
-    overlayZIndex,
-    contentZIndex,
-    isOpen,
-  });
+  console.log('[KLineChartModal] 渲染 Modal, isOpen:', isOpen);
 
   return (
     <Modal
@@ -477,15 +466,11 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
       blockScrollOnMount={false}
       isCentered
     >
-      <ModalOverlay
-        bg="blackAlpha.700"
-        zIndex={overlayZIndex}
-      />
+      <ModalOverlay bg="blackAlpha.700" />
       <ModalContent
         maxW="90vw"
         maxH="85vh"
         bg="#1a1a1a"
-        zIndex={contentZIndex}
         border="2px solid #ffd700"
         boxShadow="0 0 30px rgba(255, 215, 0, 0.5)"
       >
diff --git a/src/views/Community/components/InvestmentCalendar.js b/src/views/Community/components/InvestmentCalendar.js
index d71ade3f..39672f65 100644
--- a/src/views/Community/components/InvestmentCalendar.js
+++ b/src/views/Community/components/InvestmentCalendar.js
@@ -296,6 +296,9 @@ const InvestmentCalendar = () => {
             formattedEventTime: formattedEventTime
         });
 
+        // 先关闭相关股票模态框，避免 z-index 冲突
+        setStockModalVisible(false);
+
         setSelectedStock({
             stock_code: stockCode, // 添加交易所后缀
             stock_name: stock[1]
@@ -840,7 +843,7 @@ const InvestmentCalendar = () => {
                 )}
             </Modal>
 
-            {/* K线图弹窗 - 使用超高 z-index 确保显示在最上层 */}
+            {/* K线图弹窗 */}
             {selectedStock && (
                 <KLineChartModal
                     isOpen={klineModalVisible}
@@ -852,7 +855,6 @@ const InvestmentCalendar = () => {
                     stock={selectedStock}
                     eventTime={selectedEventTime}
                     size="5xl"
-                    zIndex={9998}
                 />
             )}