diff --git a/backend/services/tencent.py b/backend/services/tencent.py
index 098424e..615028a 100644
--- a/backend/services/tencent.py
+++ b/backend/services/tencent.py
@@ -142,11 +142,11 @@ async def fetch_quote(code: str) -> Optional[dict]:
                 return None
             text = resp.content.decode("gbk", errors="replace")
             parts = parse_tencent_data(text)
-            if not parts or len(parts) < 46:
+            if not parts or len(parts) < 47:
                 return None
             # 字段索引：1=名称, 3=当前价, 4=昨收, 5=今开, 6=成交量(手)
             # 7=外盘, 8=内盘, 31=涨跌额, 32=涨跌幅%, 33=最高, 34=最低, 37=成交额(万)
-            # 38=换手率%, 39=市盈率, 43=总市值, 44=流通市值, 45=市净率
+            # 38=换手率%, 39=市盈率, 43=振幅%, 44=流通市值(亿), 45=总市值(亿), 46=市净率
             name = parts[1] or ""
             current_price = float(parts[3]) if parts[3] else 0
             yesterday_close = float(parts[4]) if parts[4] else 0
@@ -161,9 +161,10 @@ async def fetch_quote(code: str) -> Optional[dict]:
             inner_disk = float(parts[8]) if parts[8] else 0
             turnover_rate = float(parts[38]) if parts[38] else 0  # 换手率%
             pe = float(parts[39]) if parts[39] else 0  # 市盈率
-            total_market_cap = float(parts[43]) if parts[43] else 0  # 总市值
-            circulating_market_cap = float(parts[44]) if parts[44] else 0  # 流通市值
-            pb = float(parts[45]) if parts[45] else 0  # 市净率
+            # 腾讯API返回的市值单位是亿, formatMoney期望元, 需×1e8
+            total_market_cap = float(parts[45]) * 1e8 if parts[45] else 0  # 总市值(亿→元)
+            circulating_market_cap = float(parts[44]) * 1e8 if parts[44] else 0  # 流通市值(亿→元)
+            pb = float(parts[46]) if parts[46] else 0  # 市净率
 
             if not name or current_price == 0:
                 return None
diff --git a/src/routes/sectors.tsx b/src/routes/sectors.tsx
index 6fb6eac..2f7e0da 100644
--- a/src/routes/sectors.tsx
+++ b/src/routes/sectors.tsx
@@ -75,7 +75,13 @@ function SectorsPage() {
           {TABS.map((t) => (
             <button
               key={t.key}
-              onClick={() => setTab(t.key)}
+              onClick={() => {
+                if (t.key !== tab) {
+                  setData([]);
+                  setLoading(true);
+                  setTab(t.key);
+                }
+              }}
               className={`flex-1 py-1.5 text-sm font-medium rounded-md transition-colors ${
                 tab === t.key
                   ? "bg-background text-foreground shadow-sm"