diff --git a/backend/auvops.sh b/backend/auvops.sh
index a0be088..f643ddf 100755
--- a/backend/auvops.sh
+++ b/backend/auvops.sh
@@ -6,6 +6,7 @@
 #
 # 用法（容器内）:
 #   ./auvops.sh cache-clear            # 清空全部缓存（当日数据全新）
+#   ./auvops.sh cache-clear-graph      # 只清空热点穿透(theme_graph)缓存
 #   ./auvops.sh clean-expired          # 只清理已过期的缓存
 #   ./auvops.sh cache-count            # 查看缓存条数
 #   ./auvops.sh recollect [DATE]       # 删除并重采指定交易日（默认当天）
@@ -57,6 +58,22 @@ EOF
   echo "✅ 缓存已清空"
 }
 
+# 仅清空热点穿透(theme_graph)缓存：改写 top/排序后旧图数据过期，删掉让下次请求重建
+cmd_cache_clear_graph() {
+  echo "① 清空热点穿透(theme_graph)缓存"
+  "${PY}" - <<'EOF'
+from database import get_connection
+conn = get_connection()
+try:
+    cur = conn.execute("DELETE FROM cache WHERE key LIKE 'theme_graph:%'")
+    conn.commit()
+    print(f"  已删除 {cur.rowcount} 条 theme_graph 缓存")
+finally:
+    conn.close()
+EOF
+  echo "✅ 热点穿透缓存已清空"
+}
+
 # 只清理已过期缓存
 cmd_clean_expired() {
   echo "① 清理过期缓存"
@@ -138,6 +155,7 @@ main() {
   local cmd="$1"; shift
   case "${cmd}" in
     cache-clear|cc)    cmd_cache_clear "$@" ;;
+    cache-clear-graph) cmd_cache_clear_graph "$@" ;;
     clean-expired)     cmd_clean_expired "$@" ;;
     cache-count)       cmd_cache_count "$@" ;;
     recollect)         cmd_recollect "$@" ;;
diff --git a/backend/routes/themes.py b/backend/routes/themes.py
index 952b67a..08551c8 100644
--- a/backend/routes/themes.py
+++ b/backend/routes/themes.py
@@ -29,7 +29,7 @@ async def theme_list(
 @router.get("/graph", summary="热点穿透：题材-股票网状关系图")
 async def theme_graph(
     sort_field: int = Query(1, description="题材排序：1=涨幅 4=热度"),
-    top: int = Query(30, ge=1, le=60, description="题材数量"),
+    top: int = Query(30, ge=1, le=200, description="题材数量"),
     limit: int = Query(1000, ge=100, le=2000, description="下发的股票节点上限（按穿透度取前 N 只）"),
 ):
     if sort_field not in (1, 4):
diff --git a/backend/services/daily_collector.py b/backend/services/daily_collector.py
index 926547c..6aed654 100644
--- a/backend/services/daily_collector.py
+++ b/backend/services/daily_collector.py
@@ -19,7 +19,7 @@ CHECK_INTERVAL_SECONDS = 300
 COLLECT_AFTER_TIME = dtime(15, 1)  # 收盘后 15:01 开始允许采集（留 1 分钟等收盘数据稳定）
 CORE_STOCK_LIMIT = 100      # 题材领涨股涨幅前100
 TOP_THEME_LIMIT = 20        # 题材涨幅前20
-HOTMAP_TOP_N = 50           # 热点穿透采样题材数：涨幅榜+热度榜各取前50，合并（与热点穿透页一致）
+HOTMAP_TOP_N = 100          # 热点穿透采样题材数：涨幅榜+热度榜各取前100，合并（与热点穿透页一致）
 HOTMAP_CORE_LIMIT = 100     # 热点穿透核心股前100（按覆盖题材数降序）
 CORE_COVER_THRESHOLD = 2    # 热点穿透核心股门槛：覆盖题材数 ≥2
 
diff --git a/backend/services/themes.py b/backend/services/themes.py
index df6b8bb..a11aaad 100644
--- a/backend/services/themes.py
+++ b/backend/services/themes.py
@@ -308,7 +308,7 @@ async def _build_theme_graph(sort_field: int, top_n: int) -> dict:
 
     Args:
         sort_field: 题材排序 1=涨幅, 4=热度（当前榜在前，另一榜合并补充）
-        top_n: 每个榜单的题材数量（1-60）
+        top_n: 每个榜单的题材数量（1-200）
 
     Returns:
         {
@@ -422,7 +422,7 @@ async def fetch_theme_graph(sort_field: int = 1, top_n: int = 30, limit: int = 1
 
     Args:
         sort_field: 题材排序 1=涨幅, 4=热度
-        top_n: 每个榜单的题材数量（1-60）
+        top_n: 每个榜单的题材数量（1-200）
         limit: 下发 stocks 上限（穿透度最高的 N 只）
     """
     cache_key = f"theme_graph:{sort_field}:{top_n}"
diff --git a/src/routes/hot-map.tsx b/src/routes/hot-map.tsx
index c75000b..fad026d 100644
--- a/src/routes/hot-map.tsx
+++ b/src/routes/hot-map.tsx
@@ -52,7 +52,7 @@ function HotMapPage() {
 
   const { data: graph, isLoading, isFetching, isError, refetch } = useQuery({
     queryKey: ["themeGraph", mode],
-    queryFn: () => fetchThemeGraph(mode, 50),
+    queryFn: () => fetchThemeGraph(mode, 100),
     staleTime: 60_000,
     retry: false,
   });