diff --git a/src/components/StockChart/KLineChartModal.tsx b/src/components/StockChart/KLineChartModal.tsx
index 1fd1a118..ade4f696 100644
--- a/src/components/StockChart/KLineChartModal.tsx
+++ b/src/components/StockChart/KLineChartModal.tsx
@@ -72,6 +72,17 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
   const [error, setError] = useState<string | null>(null);
   const [data, setData] = useState<KLineDataPoint[]>([]);
 
+  // 调试日志
+  console.log('[KLineChartModal] 渲染状态:', {
+    isOpen,
+    stock,
+    eventTime,
+    zIndex,
+    dataLength: data.length,
+    loading,
+    error
+  });
+
   // 加载K线数据
   const loadData = async () => {
     if (!stock?.stock_code) return;
@@ -450,14 +461,17 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
 
   return (
     <Modal isOpen={isOpen} onClose={onClose} size={size}>
-      <ModalOverlay bg="blackAlpha.700" zIndex={zIndex} />
+      <ModalOverlay
+        bg="blackAlpha.700"
+        sx={zIndex ? { zIndex: zIndex } : undefined}
+      />
       <ModalContent
         maxW="90vw"
         maxH="85vh"
         bg="#1a1a1a"
         borderColor="#404040"
         borderWidth="1px"
-        zIndex={zIndex}
+        sx={zIndex ? { zIndex: zIndex + 1 } : undefined}
       >
         <ModalHeader pb={3} borderBottomWidth="1px" borderColor="#404040">
           <VStack align="flex-start" spacing={1}>